July 29
(Copy of post to Gardenweb)
We have an Update.
It's Squash Vine Borers.
As of this morning we trimmed our 3rd and only surviving Turban/Buttercup (not quite sure which was planted) plant. We found the larvae in the stem.
For some reason we thought we might not have as much pests as we live in the middle of a city. That was wrong.
These are the Squash and the Damage done:
- 2 Buttercups/turban completely dead and stem base is mushy as if its rotted
- 1 Buttercup/Turban has been trimmed in half, other half is still thriving
- 1 Pink Banana has fruit growing, 1 leaf is wilting, will keep careful eye on this as it is susceptible to SVB
- 1 Pink Banana is growing with no signs of SVB
- 1 Pink Banana was growing find and has been wilting on and off for 2 days, will keep a close eye on this too
- 1 Fairytale looks very healthy, not susceptible to SVB or Squash Bugs, but has 1 or 2 small holes in one leaf. Fruit is growing strong. Most healthy plant we have!
- 1 pepo at the front is just making a fruit now, appears to be the delicata we planted, appears healthy, has 1 burst or damaged vine either from SVB or when we moved it and strung up said vine to our tree. Will keep an eye on this and possibly use some surgical methods (as Grow Veg would say) to slice open and inspect for the SVB grubs.
- 1 Casper/Pink Banana, again not sure which germinated in this pot. Has no damage, also is so small it hasn't any male flowers yet.
- 4 Early Butternuts, these are also so small they don't have male flowers yet. Looking healthy though, and they aren't susceptible to SVB.
I should note some of these plants were not closely inspected today. Got turned off gardening after seeing the wrigglies, so we will do a closer inspection soon.
We are looking at methods of killing them. Does anyone know if amending the soil with say, selenium or sulphur could help the plant kill insects?
Recently found a paper saying selenium in plants kills aphids when they eat the plant.
One more question: Does anyone know if C. pepo is susceptible to SVB or Squash Bugs?
Thank you.
Response to C:
We did a lot of research on this and all this information is what we found.
Given that C. moschatas are generally tolerant of SVB and Squash Bugs, you're squash's problem may be it needs Calcium, or it may need Magnesium to be able to absorb the Calcium.
The easy thing to do would be buy some Epsom salt, or Magnesium Sulfate from the bulk store. Its a very absorbable type of Magnesium.
Tomatoes and Squash seem to both suffer from Blossom End Rot, which can either be deficiency or inconsistent watering. For tomatoes, Blossom End Rot can also just happen to the first few tomatoes and the ones after won't have the problem.
It turns out water washes out the minerals from you plants soil, either from watering or rain. We thought this might have been our problem since we grow our plants in containers and it rained everyday for a week. Other people reported this happening. So just to be safe, when it rains quite a bit, add that Magnesium and Calcium to the soil.
Iron is important to add too. We haven't found a store that sells it yet.