Yellow spots on cucumber leaves?

3 years ago

Can someone identify the problem with my cucumber leaves? It started off mild, but now, with several rainy days in the last few weeks, pretty much all my cucumber plants look like this. The leaves are dying and falling off and I'm afraid I will lose these plants which have been such good producers for me! So far, zucchini and butternut squash leaves seem unaffected. Pics in comments. Thanks!

Featured Answer

joyfulguy

3 years ago

Many of my cucumber leaves are going much as shown, as is common, year after year, also with squashes and cantaloupe.

Good production, though: so far.

Purple beans have been producing for a couple of weeks and green vine ones are blossoming.

Much reduced garden this year, but some consumer problem: usually ate some myself - no problem.

Fed landlord's family - still going strong, see him often.

Fed son - mostly kperational: see him usually 10 day or couple of week intervals, lately.

Took trays to a couple of churches with which I'm connected, asking folks to contribute a little more to offering or charity.

They're shut down till Sept. (at least).

One is open for certain issues and to receive contributions on Thurs. mornings, so I may take trays to leave outside the entry while I shop, etc.

This spring I shared asparagus with neighbours along my road (many of whom I visit in Feb. seeking contributions for Heart and Stroke Foundation).

ole joyfuelled - with fuelling assistance from garden

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Comments (6)

lovemycorgi z5b SE michigan
Original Author
3 years ago
0
Sisters in faith
3 years ago
Yellow or brown spots on the leaves could indicate an anthracnose infection.Diseases-that-Affect-Cucumbers
0
lovemycorgi z5b SE michigan thanked Sisters in faith
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cucumber leaves yellow, some with irregular white spots
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Comments (3)
The white areas look like they are dried out, not like something is growing on top. I added some 5-3-4 fertilizer last weekend following the manufacturer's instructions because the squash next to it was looking a little yellow too. The squash has greened up but the cucumbers did not. I guess I'm wondering if I should rip them up and re-plant, because I probably still have time. Or maybe just cut off all of the lower leaves that look like this. It's a bit heartbreaking because there are lots of mini-cucumbers on the vine already.
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Yes, direct seeding cucumbers, squash and beans are definitely the way to go! I've never planted a succession planting of cucumbers, but I've done it with green beans and zucchini and it's worked pretty well. I'd normally be putting those second plantings in right around now, so if you're thinking about it, go for it! There's a great book called "Golden Gate Gardening" by Pam Pierce. It's got several planting calendars depending on your microclimate here in the Bay Area, and I find them really helpful. It's the best gardening book I have. The first few years I had my garden in this house, I experimented with planting a bunch of different things at different times of the year. For example, I learned my spring broccoli and cabbage did really well, the fall ones were fails--too many bugs. I logged what I did and how well it worked (rather obsessively, I confess). I also tried planting lots of different vegetables. It took me 3 years of playing year-round before I came up with a pretty solid calendar and list of veggies that worked for me. Granted, you never stop experimenting when it comes to gardening. But those first years were really a free-for-all. Especially if you grow from seed, you have control over what you plant and when. And if you buy quality seeds (Johnny's is my favorite), a packet will last you several years. So that long-winded response was all to say go for it! That's the fun of gardening IMO, playing around with things. There is no failure, because you learn as much from the dead plants as you do the ones that thrive. Your cucumbers look good to me, so you're definitely doing something right!
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Comments (3)
The lesions confined by the veins look like angular leaf spot caused by the bacteria Pseudomonas syringae. It's pretty common on cucumbers. It survives on plant debris so sanitation is a big part of control. It also hangs out in the soil, so rotating out to something less susceptible for a few years would help. If re-planting with cucumbers, it's best to use pathogen free seeds if you can. I'm not really sure how that works in a home owner situation. There are also resistant varieties available. Unfortunately, there isn't any way to get rid of it now that you have it. You can slow the spread by watering early in the morning to allow the leaves to dry more quickly. Also, only pick fruit when the plants are dry.
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I'm not finding photos of necrotic blight, but other blights show darker spots with a circular pattern not seen on my leaves. Also my fruit is unaffected. Septoria Leaf Spot sounds and looks similar to what mine have. Either way, the treatment is removal of affected leaves and a copper spray. I will do both as well as a preventative spray on my other tomatoes. Thanks, Omni.
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share_oh
3 years ago
I'm having all kinds of problems with my cucumber plants! They seem to have all the known causes from what I've read. Wish there was a simpler answer. I have spotted several cucumber beetles and try to kill them when I can catch them. Ugh.

I have been having a banner year with my cukes - they are SO sweet. I really hate losing them but I'm about ready to pull them all out. I do have 3 new plants I recently sprouted and once they get bigger, they will go out in the garden and hopefully I'll get some fall cukes.

I swear with all the problems we face from Mother Nature, it's a wonder we can grow anything!
0
lovemycorgi z5b SE michigan thanked share_oh
lovemycorgi z5b SE michigan
Original Author
3 years ago
Thank you, I read about anthracnose infection, but my cucumbers themselves have been fine; only the leaves are affected. These plants are actually still producing! But it does seem like it could be fungal, and it seems the rain has really spread what was there.

I've seen some black and red beetle-y looking things and I removed them when I found them. My zucchini leaves have powdery mildew now as well, so yes, it is a wonder we can grow anything! :-(

I'm still waiting for my pole beans to start producing...plants look great, but no flowers and no beans. I haven't fertilized too much, and they get enough sun and water. Trying to be patient!
0
lovemycorgi z5b SE michigan
Original Author
3 years ago
joyfulguy, it sounds like you have quite a garden (and heart!) to be able to share your bounty in so many ways!

First year vegetable gardener here, so I started small. Planning on expanding next year - I have learned so much through this experience and hope to be better prepared.

Been worrying so much about my harvest - actually had a dream last night that I went to feed my family the corn I've grown and when they pulled back the husks, there were no kernels.
0

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Yellow spots on cucumber leaves?

joyfulguy

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lovemycorgi z5b SE michigan
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Sisters in faith

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Yellow spots on cucumber leaves?

joyfulguy

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lovemycorgi z5b SE michiganOriginal Author

Sisters in faith

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lovemycorgi z5b SE michiganOriginal Author

lovemycorgi z5b SE michiganOriginal Author

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lovemycorgi z5b SE michigan
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