ISD Treatment Question

Q:  I’m wondering if there are any treatments I should be administering to my trees. I have (2) Meyer lemon trees, (1) lime tree, and (1) Temple orange tree. They are all relatively young….+/- 2” trunk. My temple orange came with a tag (ISD Treatment – Imidacloprid Soil Drench) that stated the tree needed retreat after specific date.


Thank you for the question. Your question is a very good one that requires a little bit of information detailed out. Here is what we would like to answer for you and your citrus trees:

A: First. ISD treatment is an Imidacloprid treatment. Citrus-producing nurseries are government mandated to do treatments for all citrus trees leaving the premises. Therefore, that means there is a tag placed on every tree, so the garden center that gets it will retreat as required.

Second. Homeowners are not required to do the re-treatment once the tree is home. But you can if you wish. You can go away from this ISD treatment, however your tree may need a little more care against insects… But other products are available. For instance, a product like Thyme-Guard and a good fertilizer/micronutrient product helps you and your citrus tree out tremendously.

Lastly. Here is a link for the GrowScripts Products in a kit form: Citrus Tree Plant Food Nutrition for Lemon, Lime, Orange Trees (growscripts.com)


In conclusion, we want you to know the most about this treatment. Therefore, you can find more information about Imidacloprid products at the resource listed below. Here are some things covered on the page:

  1. What plants may use the Imidacloprid Soil Drench on
  2. What insect pests do ISD Treatments control
  3. When you can eat the fruit and vegetables on your plants

SOURCE: https://hortnews.extension.iastate.edu/2012/3-21/imidacloprid.html

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