Too little water can also cause cucumber leaves to wilt and turn yellow, but the leaves may turn brown at the edges and feel crisp and dry. Aim to give cucumber plants an inch of water each week from ...

There are also a variety of leaf spots. These fungus diseases can be controlled, if needed, with a broad-spectrum fungicide labeled for use on vegetables, such as copper or chlorothalonil.

Excess salts not taken up by the plant remain in the root zone, which can cause the leaf tips to turn brown. This can happen with soil-grown plants too.

Take a look at the bottom of your cucumber plant and you’ll notice there are clusters of stems that shoot off from the base of the primary stem; these are the ones you’ll want to cut.

When plant problems are noticed, positively identify what’s causing the symptoms and determine if control is needed. If so, decide which methods work best. A pesticide may not be the best choice.

Filip Gazdik, Eliska Penazova, Jana Cechova, Miroslav Baranek, Ales Eichmeier, Quantitative real-time PCR assay for rapid detection of Pseudomonas amygdali pv. lachrymans in cucumber leaf rinse, ...

"Corn gene conferring resistance to multiple plant leaf diseases." ScienceDaily. ScienceDaily, 24 July 2017. <www.sciencedaily.com / releases / 2017 / 07 / 170724113600.htm>.

There are also a variety of leaf spots. These fungus diseases can be controlled, if needed, with a broad-spectrum fungicide labeled for use on vegetables, such as copper or chlorothalonil.