Landscape Problems

It’s My Book Birthday!

Arizona garden, AZ Plant Lady, Cactus/Succulents, California desert garden, desert gardening, Dry Climate Gardening Book, Landscape Design, Landscape Problems, Las Vegas gardening, Nevada garden, Southwest garden

Noelle Johnson author Dry Climate Gardening Book

A Long-Awaited Gardening Book Birthday: Turning 18 Months of Dreams into Reality

Today – the big gardening book birthday – was a day long in coming…

In many ways, it was like a very long pregnancy. 18 months to be exact since my initial discussion with my editor about writing a book on desert gardening.

The journey from idea to book is filled with varying emotions. From excitement, stress, and impatience, to today when I feel pure happiness.

Writing a book is not easy. My reason for doing so is to inspire and guide people who live in dry climates. I want you to create and maintain an outdoor space that brings both joy and beauty.

Empowering Dry Climate Dwellers: Tips, Strategies, and More in ‘Dry Climate Gardening’

Within the pages of Dry Climate Gardening, I help you with specific garden and landscape strategies. I help with plant choice, planting tips, watering strategies, pest control, design inspiration, and lists of my favorite plants.

Wherever you are in your garden journey, I hope you will find help and ideas for your landscape. The truth is that you can have an attractive garden despite living in an arid region.

Dry Climate Gardening: Creating Beautiful, Sustainable Gardens in Low-Water Conditions is available now. Find the book everywhere books are sold. Click here to order yours and celebrate my gardening book birthday with me!

Got Dead Plants?

Arizona garden, California desert garden, desert gardening, Landscape Problems, Las Vegas gardening, Shrubs, Southwest garden

Understanding the Mystery of Dead Plants

I’m pretty sure I know the answer to the dead plant mystery.

We have all likely experienced the death of a plant in our garden, and even though I am a horticulturist, I’m not immune.

Sometimes, plants die in my garden too.

The Perplexing Case of ‘Blue Bells’ Emu Bush

Here is a photo of my recently deceased ‘Blue Bells’ emu bush.

I was surprised to see that it had ‘kicked the bucket’ as its nearby neighbors were flourishing. Dead plants can tell a story.

So, the question I have to ask myself is, why did it die?

How to Figure Out Why a Plant Died in Your Garden

To determine why a plant died, here are some things to ascertain…

1. Recent Planting and Transplant Shock:

Was it planted recently? If so, it may not have had enough time to grow enough roots to survive summer. Transplant shock is a real thing.

2. Watering Issues Are a Concern:

Did it get enough water? Was the drip emitter plugged or broken? Sometimes we need to better educate ourselves on water irrigation.

3. Sun Exposure Extremes:

Was it planted in the wrong exposure? In other words, did it get too much sun or not enough? Both of these things can cause dead plants.

4. Climate Compatibility Can Cause Dead Plants:

Does the plant do well in our hot, desert climate? Or will it end up a dead plant because it is not built for the desert climate.

5. Pest Problems:

Were there any pest problems, such as ants around the roots or other unwelcome bugs? This can weaken the plant.

6. Overall Landscape Health:

Are identical plants in your landscape struggling too? If so, they might all be struggling due to a similar issue.

7. Soil Conditions are Important:

Is there a problem with the soil? Groupings of dead plants can sometimes indicate poor soil conditions.

Using these questions as guidelines, you’ll likely have the answer to why a plant has died.

However, in my case, the plant was a few years old, always did well, and the ‘Blue Bells’ nearby were thriving.

So, why did it die?

I don’t know…

Sometimes plants die, and we don’t know why. I realize this can be hard to accept without having the answer.

That is what happens in nature – things die, and we don’t always have the answers as to why.

In my particular case, I am replanting a new “Blue Bells” because I know it grows well for me in this spot. I ensured there were no unwelcome bugs in the soil and amended the soil with 1 part compost mixed with 1 part existing soil to give it a little ‘boost.’ You might find a different plant that works well for your garden.

I hope my new plant is happy…

Mishaps in the Garden

desert gardening, Landscape Problems, Trees

desert tree with shrubs planted underneath in a garden

In a perfect world, everything runs smoothly with no unexpected problems, and while you may not know what the future holds, it’s always positive.

But, you know that isn’t how life works and this is certainly true in the desert garden.

The other day, I was walking through my back garden after returning from summer vacation, and what I noticed didn’t make me happy.

Several plants around my flagstone seating area were dead or barely alive. In fact, I need to replace at least ten plants in this area.

This lead me to wonder why I suffered these mishaps in my garden. The plants are about three-years-old and were doing fine earlier this year.

In the picture above, you can see a part of this area as it looked last fall. As you can see, all the plants are happy and thriving. Sadly, now some of them aren’t – especially the blackfoot daisy and shrubby germander.

So why did some die this summer?

Sometimes, the reason a plant dies isn’t readily apparent, but in my case, I knew what the answer was.

Back in June, a large branch from my palo verde tree broke off from being too heavy. Normally, my trees are well-maintained by a certified arborist company. However, due to the labor shortages prevalent post-Covid, most arborists are struggling with insufficient employee numbers.

So, my tree pruning, which normally takes place in March was postponed until July. As a result, the branch became too laden with new foliage and branches and broke off.

This particular branch shaded the seating area and a large number of plants around it. All of the plants in this area can handle full sun with no problem. However, they were accustomed to the filtered shade offered by the tree. So, when the branch fell, they were exposed to the harsh desert sun without having a chance to adjust to it over several weeks.

Mishaps like this are part of living with nature and it’s why there are no ‘perfect’ gardens. If you strive for a perfect garden, you are likely to experience disappointment now and then.

In my instance, I am making a list of replacement plants and may try something different in place of the blackfoot daisy – I am not sure what yet.

Unexpected problems like this are often an opportunity to try new plants. Fall is right around the corner, which is the best time of year to add new plants, so I will wait until then to get my new ones in.

I hope that your garden is weathering the summer heat nicely, but if it isn’t, don’t be afraid to try something new this fall!

Summer Hibernation Mode; What it is All About

Arizona garden, AZ Plant Lady, California desert garden, desert gardening, Ground Covers, Landscape Problems, Las Vegas gardening, Nevada garden, New Mexico garden, Road Trip, Shrubs, Southwest garden, Southwest Texas garden

The dog days of summer…

By the time midpoint of summer heat arrives, I am firmly in ‘summer hibernation’ mode. I have past all the garden needs in hot early summer and moved on to trying to find a cool spot with a nice glass of lemonade.

Why Summer Hibernation Mode in the Desert

While much of the country stays indoors during the cold of winter, we desert dwellers flip that and spend the hottest days of summer safely ensconced indoors in the comfort of A/C.

Of course, cabin fever can hit, making us venture outside of our homes. That’s where summer getaways come into play.

I’m fortunate that there are many spots in Arizona (where I live) that are just a few hours from my house where the summer temperatures are blessedly cooler.

When my husband and I were young, we couldn’t afford to stay overnight in out-of-town destinations. But, we could go for the day. We would pack up our two young daughters and go on day-long adventures to the cool mountains and pack a picnic lunch. Oh, what fun we had!

Nowadays my husband and I travel to cooler spots and spend a few days. One of our favorite places is the town of Bisbee in southeastern Arizona.

There is a lot of history in there and we love to explore while enjoying the cooler temps. The photo above is a part of Bisbee called Lowell, which is preserved in time from the 1950s.

Garden Concerns for Extreme Southwest Heat

Speaking about the heat, I’ve heard from a number of people in my membership club who are worried about the lack of flowers they see on their shrubs and groundcovers.

Perhaps you have similar worries…

I want to assure you that this is normal in summer – particularly when monsoon rains have been sporadic and not regular.

Intense heat and dryness tend to make flowering plants slow down and a heatwave can burn flowers of certain plants. There are also a lot of fuss-free plants you can choose for the summer garden that bloom and look beautiful all season long.

Rest assured that they will come back by summer’s end to provide beauty to your outdoor space.

Thriving in the Heat

Arizona garden, Cactus/Succulents, California desert garden, desert gardening, Fuss Free Plant, Ground Covers, Landscape Design, Landscape Problems, Las Vegas gardening, Nevada garden, New Mexico garden, Perennial, Southwest garden, Southwest Texas garden, Succulent Gardening, Sustainable Landscape

flowering groundcovers and a cactus landscape

Let’s face it…summer can be brutal.

I tend to spend as little time outdoors as possible when temperatures soar above normal ranges. It’s times like this that I praise the inventor of air-conditioning.

While we can escape record-breaking temperatures, our plants can’t.

However, you can create a landscape filled that thrives in the heat by using native or desert-adapted plants. And you know what? Most are very pretty!

Last weekend, I saw a great illustration of this…

Our church recently opened up a new campus, filled with new plants, but many of them were struggling to survive the intense heat. Many were planted native to more tropical climates.

After church, my husband and I headed out to the hospital to visit a loved one. The hospital had just undergone a renovation and brand-new landscape areas surrounded the entrance.

I stopped to take a photo of one of the areas that were doing very well so I could share it with you. Full disclosure: if you hang out with me, be prepared for sudden stops to take pictures of plants.

There were two main reasons that the landscape by the hospital was doing better than the one by the church:

The plants by the hospital were better adapted to hot summers – desert marigold (Baileya multiradiata), gold lantana (Lantana ‘New Gold’), and Mexican fence post cactus (Pachycereus marginatus).

Additionally, these plants had been installed three months earlier than the ones at the church. Yes, plants can technically be added any time of year BUT there are times that should be avoided if at all possible – specifically May and June.

Sometimes you need to add new plants at the wrong time of year due to construction schedules, etc. In that case, I advise the use of shade cloth on a temporary basis for young plants through September IF you see that certain plants are struggling. This is in addition to watering them more often than existing plants in the landscape to help them establish their roots.

Use native or desert-adapted plants (those from other regions with similar weather conditions) to help your garden to be more resilient to hot, dry temperatures and they will need less help from you to beat the heat.

Stay cool friends!

What’s Chewing On My Leaves?

Arizona garden, AZ Plant Lady, California desert garden, desert gardening, Landscape Problems, Nevada garden, New Mexico garden, Perennial, Roses in the Desert, Shrubs, Southwest garden

Have you ever noticed circular areas missing from your leaves? If so, you aren’t alone. The other day I noticed several of my plants with neat semi-circular sections missing. But, was I worried? Nope, and I’ll tell you why in my latest garden video.

Has this happened in your garden? What plants were affected?

Behind Every Green Thumb Are a Trail of Dead Plants

Arizona garden, desert gardening, Horticulturist, Landscape Problems, Perennial, Shrubs, Southwest garden

A ‘Painted Lady’ butterfly drinking nectar from a lantana.

Do you know someone who has a green thumb? Usually, it’s someone with a beautiful garden that stands out among their neighbors with thriving plants that flourish.

While you may think people with green thumbs are born and not made, I’ll let you in on a BIG secret – behind every green thumb is a trail of many dead plants.

It’s true. There isn’t a single experienced gardener who has never had a plant die in their garden. Of course, someone with a green thumb may be hesitant to reveal this fact, and you may not notice because dead or failing plants are usually pulled out before people notice.

I’m not exempt from this either – I’ve had many plants die on my watch.

Newly planted ‘Blue Bell’ (Eremophila hygrophana) shrubs

Believe it or not, the fact that plants die in your garden helps you to become better at growing them. While your first inclination may be to get frustrated about the loss of a plant, look at it as a gardening lesson instead.

“Every dead plant is an opportunity to learn about what went wrong and how to avoid it in the future and become a better gardener in the process.”

There are several factors that can affect whether or not a plant does well. These include the following:

Is it well-adapted to your climate?
Was it planted in the right exposure (sun, filtered sun, or shade)?
Did it receive the proper amount of irrigation?
Was it maintained correctly (pruning, fertilizing)?

New ‘Blonde Ambition’ (Bouteloua gracilis)

Researching plants before purchasing them will help you to avoid potential problems. But often the best way to learn how a plant will do is to grow them yourself.

Of course, it’s never a good idea to put a shade-loving plant in full sun, or vice versa as you’ll probably be replacing it soon.

As a horticulturist, I experiment in my garden with newer plants that have come onto the market. Several years ago, I planted several ‘Blonde Ambition’ (Bouteloua gracilis) grasses. I had heard a few different tips about how to grow them and the best exposure – one says that filtered sun is a must while another person says it can handle full sun. So, I am trying them out in my front yard to see for myself where they will receive filtered shade until the afternoon when they will be blasted by the sun. UPDATE – they do best in full sun 🙂

*One fun bonus of being a horticulturist is that growers often send plants for free so I can try them and give them feedback about how they grow in a low-desert garden.

A new Parry’s penstemon (Penstemon parryi) finds a home next to my gopher plant (Euphorbia biglandulosa).

Other things that can affect how new plants will do are nearby plants – specifically trees.

One month later.

A tree that creates dense shade will make it difficult for many flowering plants to do anything but grow foliage at the expense of flowers. However, filtered shade from desert natives such as mesquite and palo verde create an ideal environment for many blooming plants that enjoy a little respite from the full sun.

New varieties of autumn sage with the brand new lavender ‘Meerlo’.

Sometimes, there isn’t much information available on new plant introductions and how they will do in an area with extreme weather such as our hot, dry one. In this area, a grower sent me plants to see how they would fare in a low desert garden. From past experience, I knew that salvia would need some shade, but the lavender was a mystery. I’ve seen some other species of lavender doing well in full sun while others doing well in filtered shade.

As you can see, the ‘Meerlo’ lavender did very well in my zone 9 garden even though the actual information on the plant tag states that it does best in zone 8 and below.

This is a lesson that I could have only learned by trying out this plant in my garden. While it could have died, it didn’t and I’ve learned from the experience, which adds to my overall garden knowledge.

So, the next time you find a dead plant in your garden, see if you can figure out why it died and learn from it. Sometimes plants die when they should be thriving for no apparent reason. Nature isn’t always predictable and sometimes you may have no answers, but you’ll be surprised at what you can learn, and before you know it, your thumb may slowly turn ‘green’.

Fuss-Free Plants for Fall Planting

Shrubs or Mushrooms?

Arizona garden, AZ Plant Lady Classes, California desert garden, desert gardening, Landscape Problems, Nevada garden, Pruning, Shrubs

A few weeks ago, I had the opportunity to take another photo of a landscape I passed by in a neighborhood where I had just finished up a landscape consultation.

Sadly, I often see examples of truly ‘interesting’ or should I say ‘bad’ pruning. I drove by this landscape and then made a U-turn so that I could take a quick photo…

Shrub pruning

I don’t know about you, but these Texas sage shrubs look like mushrooms, don’t you think?

Sadly, pruning these beautiful flowering shrubs this way robs them of their flowers, increases maintenance, creates dead wood, and shortens their life.

While there are quite a few shrubs that take well to repeated formal pruning – doing this to flowering shrubs should be avoided.

I must admit that I have seen Texas sage and other flowering shrubs pruned into many different shapes…

But, let me be frank – shrubs aren’t meant to be cupcakes, frisbees, or gumdrops

Here are just a few reasons why…

It removes the leaves needed for the shrub to make energy for itself
Excessive pruning actually makes your shrubs grow faster, which equals MORE maintenance
Shrubs pruned often require more water as they constantly work to replace foliage lost
Continued shearing will shorten the lifespan of your shrubs
Green ‘blobs’ are ugly compared to beautiful flowering shrubs

If you are tired of the time and money it takes to maintain flowering shrubs the ‘wrong’ way. I invite you to join me in my online shrub pruning workshop where I will teach you the right way to prune.

Imagine your outdoor space filled with beautiful, flowering shrubs instead of green ‘balls’. Believe it or not, the shrubs in the photo above are the SAME plant – they have just been maintained differently. The one on the left takes much more money and time and the other thrives with pruning once (or twice) a year.

In my online class, I show you how to work with your landscaper or how you can take care of your shrubs yourself. Got ‘green balls’ already in your landscape? I’ll teach you how to rejuvenate them and the best time of year to do it.

So, ditch the ‘green blobs’ in your yard and learn how to prune with confidence – it’s much easier than you think. Learn more here and what students have to say about the class.

Avoiding Storm Damage – Desert Museum Palo Verde Trees

Arizona garden, California desert garden, desert gardening, Landscape Problems, Las Vegas gardening, Pruning, Southwest garden, Trees

Exploring the Beauty of the Desert Museum Palo Verde

Lovely flowering Desert Museum Palo Verde Tree

‘Desert Museum’ Palo Verde Trees

The Desert Museum Palo Verde, a beloved tree in arid climates, graces numerous residential, commercial, and community landscapes. Its striking medium-green trunk, feathery foliage, and golden late spring flowers contribute to its widespread popularity. While wind damage can be a concern, proper care and selection can ensure these trees thrive.

Avoiding Storm Damage of the Desert Museum Palo Verde Tree

Fallen ‘Desert Museum’ Palo Verde trees after a monsoon storm

The Desert Museum Palo Verde (Parkinsonia ‘Desert Museum’) stands as a captivating addition to arid landscapes. Its medium-green trunk, delicate foliage, and vibrant late-spring blooms make it a cherished choice for many. However, understanding and addressing potential wind damage is crucial for their successful growth.

Understanding Wind Damage Concerns

One common hesitation in planting Desert Museum Palo Verde trees is their perceived susceptibility to wind damage. However, most issues arise from improper maintenance, unsuitable locations, or the selection of the wrong tree type within the Palo Verde family.

Desert Museum Palo Verde Tree in full yellow bloom

Desert Museum Palo Verde tree in my backyard

Personal Success with Desert Museum Palo Verde

I have three ‘Desert Museum’ Palo Verdes around my house. They range in age from 10 to 20 years old. In all that time, I have not lost a single one. While minor branch breakage occurred at times, these resilient trees quickly recovered, showcasing the hardiness of this species.

So, how can you enjoy the beauty of this tree while lessening the danger of wind damage? As a retired certified arborist, I’m here to tell you that there are definitely things you can do.

5 Strategies for Structurally Healthy ‘Desert Museum’ Palo Verdes Trees

1. Water deeply to a depth of 3 feet.

Deep roots are key to the stability of a tree and also decrease the chance of uplifting roots. Apply water toward the outer reaches of the branches where the roots are concentrated. As a tree grows, its roots move outward, so move your drip emitters or hose as needed.

Be sure to plant in an area where there is adequate area for root growth. Parking lot islands and narrow areas don’t allow enough room for roots to anchor the tree.

A blooming Desert Museum Palo Verde Tree

‘Desert Museum’ palo verde that has grown too rapidly due to excess irrigation

2. Irrigate less frequently to avoid your tree growing too fast.

This is a big cause of wind damage with palo verde trees. It’s important to remember that they are desert trees and don’t need as much water as other plants in the landscape. But, people often overwater their desert trees, which causes them to grow too quickly. This causes the formation of weak wood because they haven’t had the time to grow strong trunks and branches. In the photo above, notice how thin the multiple trunks are.

Established native desert trees, that have been in the ground for at least 3 years, can follow these general guidelines – water 1 to 2X a month in spring/fall, 2 to 3X a month in summer, and monthly in winter. These guidelines are for our current drought situation but can be modified as needed.

Several Desert Museum Palo Verde Trees grouped together

Trees that have been pruned up too high (lion-tailing)

3. Prune your tree correctly.

There are examples of awful pruning. One common one is known as ‘lion-tailing’ which is when trees have been over-pruned so the majority of the tree is devoid of branches except for the very top. This pruning deprives the branches of foliage needed to produce energy for the tree and to increase tree strength. It also increases the amount of overhanging branches toward the top making the tree more likely to fall.

Many landscapers don’t know the right way to prune trees and can inadvertently cause harm to your tree. I highly recommend enlisting the services of a certified arborist to prune your tree correctly.

4. Select a multi-trunk form of Palo Verde instead of one growing on a single trunk.

Desert trees naturally in a multiple trunk form, which distributes the weight of the upper branches. Palo Verde trees that have been trained to grow on a single trunk, are under more stress from the wind with their heavy top half. The majority that you see fallen have been trained into a single-trunk tree.

This tree needs pruning before the monsoon season to lessen the weight of the canopy

5. ‘Desert Museum’ Palo Verde trees generally need pruning at least once (sometimes twice) a year.

You want to be sure to prune them before the onset of monsoon season – removing any heavyweight or branches that are weakly attached.

Desert Museum Palo Verde Tree in the front garden

Newly-pruned ‘Desert Museum’ palo verde tree ready for the monsoon season

Ensuring the Future of Your Desert Museum Palo Verde

Desert Museum Palo Verde trees are a valuable asset to desert gardens, offering beauty and shade. By following these tips, you can safeguard your tree’s health and stability for years to come. Join me in celebrating the enduring allure of these magnificent desert trees.

Want to learn more about this and other Palo Verde tree species? Check out my previous blog post here.

Garden House Call: Sunburned Citrus

Arizona garden, California desert garden, Citrus, desert gardening, Fruit Trees, Landscape Problems, Las Vegas gardening, Southwest garden

Have you ever had a sunburn? Maybe a better question is, “Who hasn’t?”

Well, did you know that many plants get too much as well?

I recently made a house call for a client who was worried about her newly planted citrus trees.

Sunburned Citrus

This particular client has a large courtyard with several new citrus trees in pots.

The citrus were planted in spring and as summer progressed, the client noticed the leaves on her orange tree turning yellow.

Now yellow leaves can indicate a number of different problems. But in this case, the diagnosis was rather simple – her citrus tree has a case of sunburn.

Here are some common signs of sunburned plants:

– The areas of the leaf that are yellow are in the center and NOT along the tips or edges.

– Often, the yellow areas begin to turn brown.

– Signs normally occur in the summer months.

– The sunburned leaves are usually located on the south and west-facing parts of the plant.

– This particular citrus tree is in an area that receives reflected, afternoon sun.

So, what can you do to prevent sunburned citrus?

In this case, the solution is simple – moving the citrus tree to another part of the courtyard that receives afternoon shade is all that is needed to prevent further sunburn damage. OR, 50% shade cloth can be used from mid-May through September.

Citrus do best when planted at least 10 – 15 ft. away from walls, which absorb the heat of the day and re-radiate it out.

Avoid planting where they get the full force of afternoon sun.

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