Gardeners have long known about white flowering plants and the beauty that they bring to the garden.

The color white is seen by many as a bright, clean color that makes surrounding colors ‘pop’ visually.  Others like how white flowers seem to glow in the evening and early morning hours in the landscape.

Thankfully, there are several white flowering plants that do very well in the Southwestern landscape. In Part 1, I showed you four of my favorites, which you can view here.

Today, let’s continue on our white, floral journey…

Disclosure: Some of the links below are affiliate links, meaning, at no additional cost to you, I may earn a commission if you click through and make a purchase.

 

White Evening Primrose (Oenothera caespitosa)
 
The arrival of spring transforms the low-growing green foliage of White Evening Primrose with the appearance of beautiful white flowers. What makes these flowers somewhat unique is that as the flowers fade, they turn pink.
 
White Evening Primrose looks best when used in a landscape with a ‘natural’ theme or among wildflowers.
 
The flowers appear in spring and summer on 10″ high foliage.  Hardy to zone 8 gardens, this small perennial is native to Southwestern deserts.
 
White Globe Mallow (Sphaeralcea ambigua ‘White’)
This is a shrubby perennial that is in my own landscape.  While the most common color of Globe Mallow is orange, it does come in a variety of other colors including red, pink and white – all of which I have.
 
The white form of Globe Mallow shares the same characteristics of the orange one – it thrives in full sun and can even handle hot, reflected sun.  The foliage is gray and looks best when cut back to 1 ft. high and wide after flowering in spring.
 
I pair white Globe Mallow alongside my pink ones for a unique, desert cottage garden look.
 
 
See what I mean about white flowers helping other colors to stand out visually?
 
Hardy to zone 6, Globe Mallow grows to 3 ft. tall and wide.  It does best in full sun and well-drained soil.
 
To learn more about this beautiful desert native, click here.

                                    Blackfoot Daisy (Melampodium leucanthum)

 
Blackfoot Daisy is another perennial that looks great in a natural desert-themed landscape.  This ground cover produces sunny, white daisies in spring and fall in desert climates – it flowers during the summer in cooler locations.
 
Hardy to zone 5, Blackfoot Daisy can handle extreme cold when planted in full sun.  I like to plant it near boulders where it can grow around the base for a nicely designed touch. It grows to 1 ft. high and 24 inches wide.
I have several in my front garden and I love their beauty and low-maintenance. They need very little maintenance other than light pruning with my Felco Hand Pruners in late spring to remove dead growth.
 
Little Leaf Cordia (Cordia parvifolia)
 
This white flowering shrub is not used often enough in the Southwestern landscape in my opinion.  It has beautiful flowers, needs little pruning if given enough room to grow, is extremely drought tolerant and evergreen.
 
Little leaf cordia can grow 4 – 8 ft. tall and up to 10 ft. wide. Unfortunately, some people don’t allow enough room for it to grow and shear it into a ‘ball’.
 
You can go 2 – 3 years or more between prunings. It’s best when left alone to bear its attractive, papery white flowers spring into fall.
 
Hardy to zone 8, little leaf cordia does great in full sun and well-drained soil.
 
‘White Katie’ Ruellia (Ruellia brittoniana ‘White Katie’)
 
During a visit to a nursery some time ago, I noticed a white flowering variety of the more commonplace purple ‘Katie’ ruellia and I immediately decided that I liked the white color better.
 
‘White Katie’ ruellia grows to 8 inches tall and 1 1/2 ft. wide in zone 8 gardens and warmer.  It looks great when planted in groups of 3 or more.  You can plant it alongside the purple variety for fun color contrast.  It does suffer frost damage when temps dip below freezing but recover quickly in spring.  
 
This white flowering perennial does best in morning sun or filtered shade in desert gardens.
 
I hope you have enjoyed these white flowering plants and decide to add them to your garden!  
  

Does it look like fall where you live?

If you live in the West or Southwestern regions of the U.S. your answer is probably “no”.

Fall foliage we enjoyed on a trip to Williamsburg, VA several years ago.
 
Have you ever traveled somewhere else to find colorful fall foliage?
 
What if you could have fall color in your own landscape?
 
Believe it or not, there are several plants that can offer some fall color for those of us who yearn for signs of autumn in the desert garden.
 
I shared 6 of my favorite plants for fall color in an article I wrote for Houzz.
 
Do you have a favorite plant that gives you fall color?
 

The signs that fall is approaching are sometimes so subtle that it is easy to miss them.  But, they are there just the same.


You may notice the lengthening shadows on your way home from work, signaling shorter days.  Or maybe you’ve noticed that you aren’t rushing indoors as quickly as you did earlier this summer.

 
Fall is a time to celebrate the end of hot summer temperatures and what better way to do that than to venture out into the garden again?
 
Before you head out to shop for plants, it’s important to pick the right ones or you may be left with a dead or struggling plant and a thinner wallet. 
Here is my most important piece of advice before you head to the nursery:
 

Research plants before buying.

 
It sounds simple, doesn’t it?  But you would be surprised to learn that most people don’t research plants before they add them to their landscape.  
 
There are three questions you should have the answers to before planting.
online-class-desert-gardening-101

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1. Know how large your plant will grow at maturity.

 
Neglecting to get the answer to this question can have unfortunate results.
 
This homeowner had ficus trees planted in the raised bed around their swimming pool.
 
Now, when you look at this picture, you may be wondering why would anyone plant ficus trees in this area.
 
Newly planted ficus tree
 Well, it goes without saying that new plants are much smaller than they will be once they are planted and have a chance to grow.
 
Mature ficus tree.
 
But, once plants are in the ground and begin growing, that small little plant can increase in size exponentially.  In this case, the ficus looks like it is ready to swallow up this house.
 
Over-planted shrubs
Another example of not researching the mature size of plants can be seen in many landscapes throughout the Southwest.  
 
In a nutshell, the small 1 foot tall and wide shrub in the nursery can grow more than 10X its original size.
 

2. Know what exposure the plant does best in.

 
Putting a plant that needs full sun in a shady spot will result in a leggy plant with few leaves and almost no flowers.
 
What a plant that does best in filtered shade looks like when planted in full sun.
 
Conversely, if you place a plant that does best in the filtered shade in an area that gets full, afternoon sun – it will suffer.
 
You will save yourself a lot of time, money and frustration by simply placing plants in the exposure they like.
 

3. What type of maintenance will your plant require?

 
Fuss-free Eremophila ‘Summertime Blue’
 
Some plants need frequent pruning, fertilizing and protection from pests.
 
Others are what I like to call ‘fuss-free’ and need little else besides water.
 
The amount of maintenance a plant needs is largely dependent on whether or not it is native or adapted to your client.
 
 
For example in the Phoenix area where I live, queen palms are very popular.  The problem is, is that they are not particularly well-adapted to our desert climate.
 
In fact, it is rare to see a healthy queen palm growing in the greater Phoenix area.  Frequent applications of palm fertilizer are required to get them to look okay and even then, they will never look as good as those growing in Florida or California.
 
I don’t like to fuss over plants except for a couple of rose bushes in my garden, so I am a strong proponent of using native or adapted plants that need little pruning, no fertilizer and aren’t bothered by insect pests.
 
Now we know three important questions to get answered before selecting plants for your garden.
 
So, where can you go for the answers to these questions?
 
There are a few different places you can go to find out these as well as other questions.
 
Master gardeners are an invaluable resource and their job is to help people learn how to grow plants successfully. You can call them, email your questions or stop by and talk to them in person.
 
Take some time to visit your local botanical garden. Write down which plants you like, or snap a photo of them with your phone. Note how large they are and what type of exposure they are growing in.
 
white-crusty-salt-build-up-plants

I have a weakness (well, one of many) to confess to you today….

I absolutely love salt.  

In fact, I have a theory that the reason that so many people love french fries is not the potatoes or the fat it is fried in. No, it is the salt that you put on them afterwards. I mean, can you imagine eating an unsalted french fry? 

In preparation for this blog post, I went through my kitchen and pulled out all of my salt & pepper shakers.

 
It’s kind of embarrassing isn’t it?  I have so many.
 
But in my defense, I must admit that I collect different types of pottery and need salt and pepper shakers for each set.  
My husband made me my wooden salt cellar, which I keep near the stove when I cook.
 
Now, I do not use as much salt as I used to. In fact, I am trying to be better about it.  When I visited the doctor earlier this week for my physical, I still had low blood pressure, much to my relief.
 
Well, we all know that too much salt is bad for you and can lead to health problems such as high blood pressure. But did you know that too much salt is not good for your plants as well?
 
Plants don’t get ‘high blood  pressure’ with too much salt, but they do have another problem that shows up.
They get brown tips on their leaves, which we call ‘salt burn’.
 
white-crusty-salt-build-up-plants

Here is another way that you can tell plants are getting too much salt. Shallow watering causes the water in the soil to evaporate quickly, leaving behind the salts. The salts look like a white crust on the soil around your plants.

At this point you may be wondering how plants get too much salt?  

Well, both soil and water have naturally occurring salts in them. This is especially true in the Desert Southwest where our water is somewhat salty and our soils can suffer from salt build-up due to high evaporation.
 
So what do you do if you have indoor or outdoor plants that have brown tips?
The solution is very easy.
 
Water deeply.
 
That’s it!
 
 
Here is a shrub that has signs of salt build-up. I encountered with one of my clients during a landscape consultation – he had other shrubs that looked similar.
 
I will tell you what I told him:
 
If your outdoor plants look like this, first water the affected plant with your hose on a slow trickle for at least 2 – 3 hours.  This helps to ‘leach’ or flush the salts away from the roots.
Thereafter, adjust your irrigation schedule so that your shrubs are watered to an approximate depth of 18 inches deep each time. Sadly, most people water too often, too shallow and not long enough.  
 
For example, I water my shrubs and perennials every 5 – 7 days in the summer. This takes approximately 2 hours for my plants to be watered to a depth of 2 ft. Of course the time it takes to water that deeply is different for each landscape and is dependent on a variety of factors including soil type and water pressure.
If your houseplant has brown tips (salt burn), then simply flush the salts out by deeply watering.  You can do this by putting your plant in the sink or bathtub and let water slowly trickle on your plant for 1 – 2 hours.
I cover landscape irrigation in depth with my students in my online course, Desert Gardening 101, but for those of you looking for advice right now here’s what I recommend. Search online for watering guidelines on your city’s website – most have schedules including recommended depths.
So in closing I’ll leave you with these two tips:
Be sure to limit your salt intake AND water your plants deeply to prevent salt burn.
Do you have plants that need extra water this summer? 
Many of us have a few plants that aren’t connected to an irrigation system. Some people don’t have an irrigation system and use a hose to water plants, which is time-consuming and inefficient.
 
While you can certainly haul out your hose and water each of your thirsty plants, it is not the best way. The main problem is the hose puts out water quickly and the soil can’t absorb it fast enough. As a result, much of the water runs off and doesn’t benefit the plant as much as it should.
So, if the time-consuming task of watering plants by hand isn’t your cup of tea, I’m here for you. You can make life easier by creating your own portable drip irrigation system with a recycled milk jug
This solution is very easy and will have you digging through your recycle bin collecting your used milk jugs.

To get started, you will need an empty plastic milk jug and a nail.

1. Heat the nail using a lighter or stove burner. Then use the nail to pierce 3 – 4 small holes in the bottom of the milk jug.
2. Fill the milk jug up with water, put the cap on and carry it upside down to the plant. Turn it right side up and set it down to the plant that needs irrigation. *You can also set the empty milk jug(s) next to your plants, bring the hose to them and fill with water that way.
3. Slightly loosen the cap, which will allow the water to drip out of the holes at the bottom – this allows the water to penetrate the soil slowly, instead of running off.

Once the water has drained out of the bottom of the jug, pick up your milk jug and move it to the next plant. After you are done, bring the empty jugs inside and store until the next time you need them.

If you live in a windy area and worry the milk jug will blow away, weigh them down with an inch of small rocks in the bottom of the jug – the rocks won’t interfere with the water dripping out.
I usually recommend this method of irrigating cacti monthly in summer.
This portable drip irrigation system is a great aid for those who live in areas that are suffering from drought or where an irrigation system may not exist.
**A semi-permanent variation of this method is to create holes along the sides instead of on the bottom. Then bury the entire jug next to the plant, leaving just the top exposed. To water plants, remove the milk cap and fill with water and replace the cap.
I hope you find this DIY garden project helpful. Please feel free to share it with your friends by clicking the “Share” button below. 

I have a confession to make.  

I don’t have any containers filled with flowering annuals. Shocking isn’t it?

There are a few reasons for this, the most important one is that I prefer using relatively fuss-free plants that look great all year in my pots.  

I don’t have much patience for high-maintenance containers. In particular, ones with flowering annuals that need frequent irrigation. Not to mention deadheading of spent flowers and having to change them out seasonally. But, I do love the way they look.

container-red-geraniums

Red Geraniums and White Bacopa

My inclination to avoid flowering annuals in my own garden has to do with my past and no, it’s nothing scandalous.

It does have to do with my work in the past. For five years, I was in charge of 45 pots. Each container was always be filled with colorful flowers.

Believe me, keeping all of those pots looking beautiful was a lot of work! Countless trips to the nursery, fertilizing, watering and replacing them twice a year got tiresome. Not to mention that I broke my foot when I tripping on a curb, while loading flats of flowers. 

So, it may not come as a surprise that I prefer using succulents in my pots.

Victoria Agave ‘Compacta’
 
Much of my inspiration for using succulents in containers come from those at the Desert Botanical Garden as shown in the photo above and below.
Agaves are some of my favorite succulent plants and the smaller species do very well in containers.

In an article I wrote for Houzz, I list my ten favorite small agaves for Houzz that are suitable for growing in pots.

I hope you enjoy it and find one that is perfect for you!
 
 
desert-landscape

“How much water do my plants need?”

I am often asked this question by desert dwellers and my answer is always, “That depends.”

desert-landscape

There are several variables that determine how much water plants need, along with the frequency of watering.

Variables include:

  • Type of soil (clay, sand, combination)
  • What kind of plant (native plants, higher water use flowering shrubs and ground covers, succulents, etc.)
  • Recommended depth of water
  • Desert region (low-desert, mid-altitude, high desert)
  • Efficiency of irrigation system
  • Water pressure (can vary between neighborhoods)
As you can see, there is no universal watering guideline in regards to how long to water or how often.

Let’s look into the variables a little more closely to help you determine what yours are:

 

SoilClay soils hold onto water longer than sandy soil. They take longer for water to permeate to the recommended depth. The result? Clay soils need irrigation less often than sandy ones but need to be watered for a longer length of time. Phoenix area soil tends to have more clay in them while those in the Palm Springs area are sandy.

Plants – Native or desert-adapted plants need less frequent irrigation versus those that come from tropical climates. Cacti and other succulents do well with infrequent irrigation.

Water Depth – Trees need to be watered deeply while ground covers and succulents do fine at a more shallow depth – shrubs fall in between the two.

Desert Region – Where you live in the desert matters when it comes to water and your plants. The differences include rainfall amounts, when the rain falls, high and low temps, and more. Residents of low-desert cities like Palm Springs and Phoenix need to add water to their plants more often than those who live in higher elevation regions such as Tucson.

Irrigation System – The older your irrigation system, the less efficient it is. This is due to mineral build-up within the system, which affects the amount of water that comes out. Also, old drip irrigation systems tend to accumulate leaks. The average lifespan for a drip irrigation system is 10-15 years. 

Despite these differences, what is a shared characteristic is that the vast majority of desert residents water too often and not deeply enough. This is usually due to lack of knowledge and thinking the ‘more is better,’ especially in the desert.
Landscapers are generally not a reliable source when it comes to scheduling irrigation – most recommend irrigating far too often.
 
So what is a desert dweller to do?
Thankfully, there is very useful information available for homeowners to help them figure out when and how much water their landscape needs.
 
Major metropolitan areas throughout the Southwest have excellent watering guidelines available for residents. The guidelines include the regional variables we have discussed so far.
Here are helpful links based on major desert cities (click the link for the city closest to you):
Watering guidelines are just that – guidelines. Circumstances may mean that you need to water more or less often, but these guides are a useful baseline to work from.
*One final note – before you implement a new irrigation schedule, it’s important to gradually wean your plants to the new one over several weeks. The reason for this is that it allows plants to become accustomed to the new schedule.

Yes, it does take a little work to figure out how much and often to water your plants, but these guides are incredibly helpful and will guide you along the way.

Palo Blanco (Acacia willardiana)

Today’s post is written by guest blogger, Emily, who writes about sustainable gardening.

Getting to landscape your own yard is exciting, and it can prove to be really fun! You can decorate your yard with the plants you love in whatever way you want them to look. There’s no end to all the ways that plants can bring life and beauty to your backyard, but what types of plants you have to choose from can be narrowed down because of where you live.

Even beginner gardeners know that plants are affected by the amount of sunlight and kinds of temperatures they deal with on a regular basis. Some plants do better in warmer climates than others. If you live in the southwest, you know that hot, dry weather is something your plants are going to have to be prepared for. Check out some of the best trees you can pick from for your yard that will thrive in the rising temperatures of the southwest.

Your Best Options

This tree list is for those who want to look through a list of potential trees without having to do a bunch of research and get disappointed when they find out that the tree they like won’t work in their yard. Extreme heat doesn’t mean that you’re limited to only a few kinds of trees. You can have large, beautiful trees that have thick foliage and provide lots of shade. You can also have fruit trees if you’re interested in growing your own food. Read on to see which trees might fit with what you’re looking for.

Stately pine trees along a historic Phoenix street

  • Aleppo Pine – Choosing to grow the Aleppo pine might be right for you if you’re looking for an ornamental tree. It has a distinct trunk and can grow up to 80 feet tall. This tree is a great addition to a yard that looks like it’s missing some character.

Desert Willow (Chilopsis linearis)

Willow Acacia (Acacia salicina)

  • Acacia Tree – If you’re looking for a tree that’ll grow quickly, the Acacia might be for you. These trees are bright with green, yellow or white colors and live for around 20-30 years. They’re also known for stabilizing soil with their roots, which is perfect for erosion-prone areas.

Texas Mountain Laurel (Sophora secundiflora)

  • Texas Mountain Laurel: A shrub that disguises itself as a tree, the Texas Mountain Laurel is a beautiful plant that provides lots of shade. It can grow to 15 feet high and when in bloom, it’s covered in massive purple flowers. Take note that the seeds it produces are poisonous if ingested, so those with outdoor pets or small children should watch this tree carefully.

‘Santa Rosa’ Plum Tree

  • Santa Rosa Plum – Fruit lovers, rejoice! You can still plant a variety of fruit trees in desert climates. The Santa Rosa Plum tree does particularly well in full sun as long as it’s watered regularly. Expect delicious summer fruit after an average full growth cycle of four years.

Grapefruit Tree

  • Citrus Trees – Many homeowners choose to grow a variety of citrus trees in the southwest because they do so well. Lemons, oranges, grapefruit and lime trees are especially common in yards since they naturally take to the weather.

Give It Time

Whatever tree you choose will need time to grow to its full maturity. This will be a different length of time depending on what kind of tree you decide to go with. Always talk with local gardeners to make sure you know what you’re getting into. On the other hand, you should also be prepared to make some mistakes! You’ll learn how best to care for your tree with time, so don’t feel like you have to know everything about your type of tree before you plant.

Jump Right Into It

The more you research, the more you may feel overwhelmed. This is normal for beginner gardeners, but learning how to grow your own tree really isn’t that difficult. It’s just a new way of gardening! And don’t think you’re alone. Ask around in your community to see if there are any gardening groups you can join, and if not, you can look online too. There are people ready to help guide you with your gardening passions so you can grow the trees of your dreams, no matter which kind you settle on.

Bio:

Emily is an avid gardener. She writes in the sustainability field and loves getting to try new composting methods to grow food with less waste. You can read more of her work on her blog, Conservation Folks.

**For more tree profiles that will add beauty to your desert garden, click here for earlier posts where I share some of my favorites.

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How would like gorgeous red, tubular flowers blooming at Christmas time and lasting past Valentine’s Day, all packaged up in an attractive, low-maintenance shrub?  Believe it or not, such a shrub exists.  Let me introduce you to ‘Valentine Bush‘ (Eremophila maculata ‘Valentine’). 

My first experience with this colorful shrub occurred in 2000 when  I was offered two free Valentine shrubs to test out on the golf course where I was working. Never one to pass up free plants, I was more than happy to try these new shrubs out. 

Young Valentine, six months after planting, next to Trailing Rosemary.
 
Those new shrubs did so well that a couple of years later, I had planted over fifty of them planted all around the golf course. I love their cool-season blooms, which add a welcome splash of color when many plants aren’t blooming, and the dark green foliage continues to add beauty to the landscape even when their flowers fade.
 

Nowadays, you will find Valentine in both commercial and residential landscapes.  An interesting fact that many may not know is that many of the arid-adapted plants that thrive here are native to Australia, including the species Eremophila

USES:  Valentine provides much need color in the landscape during the winter months and will bloom through early spring.  Red is often a color missing in the desert plant color palette which this shrub provides.  Valentine grows at a moderate rate and will reach a mature size of 3-4 feet high and 4 feet wide.  

I pair it with groundcovers such as blackfoot daisy (Melampodium leucanthum) or trailing rosemary (Rosmarinus officinalis), and perennials such as Parry’s penstemon (Penstemon parryi) and desert marigold (Baileya multiradiata)

Valentine when not in flower.
When not in flower, Valentine is still very attractive and is hardy to 15 degrees F.  It does best when planted in full and reflected the sun.  Their leaves turn maroon at the tips during the winter adding some fall color to the landscape.

MAINTENANCE:  Valentine does best with regular irrigation and soils with good drainage.  If planted in areas with wetter soils, let the soil dry out between watering to prevent root rot.  
 

You will probably not believe this, especially coming from me – the person who rants and raves about beautiful shrubs that have been incorrectly pruned by being sheared, but here it is:  Valentine shrubs should be sheared.  That’s right, I said they should be sheared.  

Believe it or not, there are some types of shrubs where shearing is the best way to prune them, and this is true for Valentine.  They should be pruned ONCE a year, once they have finished blooming in the spring.  DO NOT prune later in the year as this will remove the branches that will produce the flowers later in the year.

 
Here is the first bloom of this season on my Valentine shrub.
 
Well, would any of you be surprised to know that Valentine is my favorite shrub?  I mean, what is there not to love?  It has everything – low-maintenance, attractive foliage, thrives in the heat and sun and most importantly, gorgeous winter color.
 
In this landscape area, I designed, you can see Valentine in the background paired with Parry’s Penstemon and Desert Marigold.
 
So run, don’t walk, and go and add Valentine to your landscape.

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I am so excited to share with you the debut of a new blog, called Southwest Gardening that covers the entire SW region, which is often ignored in traditional garden media. 

The blog is written by a team of four garden experts, of which I am honored to be one. Each of us lives in a different gardening climate of the SW, and together, we are excited to share our knowledge to help all of you who live and garden in this arid region of the country.

Here are the team members:

Ann McCormick from Texas who writes the blog, Herb n’ Cowgirl

Teresa Odle from the high mountains of New Mexico who is the author of Gardening In a Drought

Jacqueline Soule from the desert region of Tucson who contributes to the blog, Savor the Southwest

and

Noelle Johnson (me) from the low deserts of central Arizona.

I hope that you will take an opportunity to visit Southwest Gardening where we will share ways to have “fun with plants in a dry climate”.