Viewing post #2279348 by EvieM27

ElPolloDiablo said:Those leaves show early stage of angular leaf spot (ALS). They will go away on their own with 10-14 days of dry weather but since we cannot control weather all you can do is manage the infection: avoid wetting the leaves when watering the plant, spray a copper-based fungicide (IE Bordeaux mixture) every couple of weeks, use a low nitrogen fertilizer and if possible switch to a resistant cultivar in the future. Eureka, Jackson and Transamerica are all ALS resistant. Needless to say it would be better if you could destroy the plants at the end of the season: back when I grew cucumbers I just threw them on the burn pile but you may not have this option.

The wilting is pretty common with cucurbits grown in containers, especially when temperatures start picking up. You should try and water the plants more often: twice a day in the hot season is usually about right.

If you have already applied a copper fungicide you can stop now. You are only making the company making it happy.

Reapply every couple of weeks and you will be fine.

Regarding spider mites: you can spot them easily with a cheap magnifying glass. The golden rule is if you don't see them, they aren't there.
Neem oil is kinda like the organic version of the Old West snake oil: it cures all ailments or none according to whom you ask. Guess to which party I belong.

THANK YOU!!!!! That is so, so so helpful. I will check on the spider mites. But I am so glad to have some confirmation on the Angular Leaf Spot. I treated them yesterday with a copper based fungicide (from Southern Ag). So you don't think I need to re-apply? Or re-apply in ten days?

I can absolutely burn the plants at the end of season. I'm honestly more excited about my Titus F1 variety anyways. Of course, the Bonnie Plants profile for the Boston seedlings says they're "disease resistant" plants. I disagree and will try both of your suggestions next year.

The people who make Neem Oil seem to have done a good job in their marketing, because everyone seems to think it's the best stuff on the planet. I don't have an opinion one way or another because I haven't used it enough.