Knowledgebase
Forgot Dormant spray in spring, now have aphids before leaf drop #831163
Asked May 21, 2023, 11:17 AM EDT
We have 5 peach tress. Usually we spray with dormant oil in the spring, but forgot this year. What do we spray our peach trees with now to control aphids which are on the leaves? The petals have not dropped but you can see the little formation of the peach at the center of each blossom. The leaves are curling. I pulled a leaf off and it had some aphids inside the rolled leaf. We also want to know which spray is best to use throughout the summer on our peach trees.
Thank you for your help!
Linda Dodge
Montrose County Colorado
Expert Response
Please check out this factsheet from Utah State Univ. Extension: Green Peach Aphid and Mealy Plum Aphid
It can be challenging to manage aphids once they are established, but insecticidal soap or 1% horticultural oil can help manage aphids.
You can also check out the CSU Extension fact sheet: Backyard Orchard: Stone Fruits
On May 22, 2023, at 10:02 AM, Ask Extension <<personal data hidden>> wrote:
It sounds like your tomatoes could possibly have early blight, but it can be challenging to diagnose tomato problems from a photo. Below is some information on early blight in tomatoes that describes the issue and includes management options.
If that doesn't sound like what you are seeing, you can bring in a sample to the Montrose master gardeners. They can take a look and provide some additional advice. They are in the Extension office in Montrose Friday afternoons, 1-3pm and are located in Friendship Hall, 1001 N. 2nd St.
On Aug 21, 2023, at 9:32 AM, Ask Extension <<personal data hidden>> wrote:
On May 22, 2023, at 10:02 AM, Ask Extension <<personal data hidden>> wrote:
Read the label of the product that was used. It will list what plants the pesticide may be used on as well as a harvest interval (e.g., "Do not apply within 14 days of harvest.").
If you don't see basil listed, it means it should not be used on that plant. In that case, you may not want to eat it. Always read the entire label and follow all label instructions before applying a pesticide.
Malathion should break down pretty quickly in the soil.
