Ask a Question
Notify Me On Question Update
Email this Question
My raspberries and red and very sweet and now I have found thread-like worms on the fruit (about 2-4 in a bowl) when washing. What are they and how do I treat the fruits? They are black or grayish and threadlike and about 1/ to 2/3 of an inch long.
Rate This FAQ
It sounds like you might have the western raspberry fruitworm, but it is hard to know for sure without a sample. This is a beetle. The adults will feed on the leaves in spring and lay eggs on the fruit. The larvae feed within the developing fruit for 5-6 weeks, and are especially noticed at harvest. The larvae, however, are whitish and only about 1/3-inch long. The larvae then drop to the ground to overwinter as pupae in the soil. Treatment is targeted at the period of egg hatch, just at pre-bloom and again post bloom, if necessary. Spinosad is an excellent, safe product to use, but carbaryl and malathion will also work.
These larvae can be washed out, as you have done, and they are also killed in the canning or freezing process.
If possible, please bring a sample of the damaged fruit as well as the larvae to your local Extension office, and they can send the sample to the Utah Plant Pest Diagnostic Lab. Or, you can visit the Web site for forms and mailing instructions: www.utahpests.usu.edu/uppdl. This way, we will be recommending the right treatment for the right pest.
Submit Your Suggestion
Other Questions In This Topic
- Do spiders eat earwigs?
- I have ants all over my yard. I also have domestic cats and wild birds. Is there any organic or other non-toxic way to kill the ants without putting poison in my yard? If not, what is the most effective, least toxic substance I can use?
- Help! I have a gigantic ant problem (millions of small black ants) in my garden. They are everywhere: in the flower beds, the veggie garden, the lawn, under the sidewalks and driveway. I have tried the sprays and spreadable pesticide from Lowe's, but nothing seems to work. They seem to multiply by the day, and are making work in the garden creepy and painful (they bite too). What can I do? There is no obvious food source around; except they seem to be eating the iris' roots. I live just above Orchard Drive and Bountiful High School. What can I do?
- Pole bean plants are getting eaten by something, little bites all over. Now leaves are turning yellow and drying up. What do you think the problem is. They get plenty of water.
- We have a deck that holds a raised hot tub about 3 - 4 feet off the ground (it's on a wood stand). Unfortunatley, bees or wasps (not sure which) have decided to use the insulation underneath the hot tub as their home. Help! I have elementary age kids that are always outside. How do I get rid of them?
- I had some trouble with Squash Bugs attacking my Spagetti Squash. Now my plants looks as if it may have Cucurbit Yellow Vine Disease (CYVD). Should I try to deteremine if its really CYVD and if it is, what do I need to do?
- Does Utah State University offer any beekeeping courses in the Layton, UT area? If so, what information is available?
- I live at the edge of a neighborhood bordering the mountains in North Ogden. The last week we have seen hundreds and hundreds of little beetle-like bugs that have six legs, two antennas and a green/black body with a bright orange border. It appears the adult version of the beetle is about 1/4 inch long and fairly round. I'm wondering what this bug is and what damage it can/will do. I have close-up photos that I'd be more than happy to provide. Can you please help me identify this pest?