What do you do when you spot aphids on your plants?

Do you reach for the nearest bottle of insecticide? Spray them off with a hose or remove them with your fingers?  

Believe it or not, sometimes the best thing is to do nothing.

So, is this something I learned in school? No. I figured it out by observing the plants in my first garden.

 
I remembered this early lesson when I passed by a severely pruned oleander shrub in front of my favorite bagel shop.  
 
The oleanders were growing back nicely. However, there were yellow aphids on the young leaves.
 
Years ago, my oleander shrubs had an infestation of yellow aphids like this, and I was anxious to get rid of them. Really, this is our first reaction when we see bugs on our plants – we want them gone.
 
I had several methods at my disposal – insecticidal soap, a strong jet of water or my fingers – all of which, would help get rid of most of the aphids. But, life got in the way, and I didn’t have a chance to get out to treat my shrubs until about ten days later.  
 
Can you guess what I found?  Not a single aphid.  I didn’t have to do a thing, and the aphids were gone, and my shrubs look great.
 
So, what happened to the aphids?
 
When harmful insect pests first appear, it can take a week or two before their natural predators follow. In the case of aphids, lacewing and ladybugs showed up and ate the aphids.  
 
Plants are tougher than we give them credit for and can handle a certain amount of insect pests without any adverse effects.  
 
So, when I come back in a couple of weeks to the same bagel shop, I expect to see no aphids in sight and a healthy oleander shrub.
The lesson here is that you don’t need to freak out when you see aphids as the normal cycle of nature will take care of them. However, you can step in to get rid of them if you see adverse effects on plants such as wilting, smaller blooms, or discoloration.
Noelle Johnson, aka, 'AZ Plant Lady' is a horticulturist, certified arborist, and landscape consultant who helps people learn how to create, grow, and maintain beautiful desert gardens that thrive in a hot, dry climate. She does this through her consulting services, her online class Desert Gardening 101, and her monthly membership club, Through the Garden Gate. As she likes to tell desert-dwellers, "Gardening in the desert isn't hard, but it is different."

5 replies
  1. A Daughter of the King
    A Daughter of the King says:

    Cute title.

    I sure wish some natural predators had come to feast on the skeletonizers that ate EVERY LAST leaf of my grapevine! Even my chickens won't have anything to do with them. 😀

  2. RobinL
    RobinL says:

    I generally do nothing about the aphids, but boy do they like to eat up my milkweed! Their natural predators don't seem to do anything about this particular batch. It's very frustrating.

  3. jeansgarden
    jeansgarden says:

    This is such an important lesson. The way I looked at insects on my plants was totally changed by reading Doug Tallamy's Bringing Nature Home, particularly his analysis of the importance of insects in the lives of birds. Now I don't panic when I see aphids or caterpillars in my garden; the plants will usually survive, and the insects will be important food for birds. -Jean

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