Have you ever wondered about the bundles of bamboo stems you see for sale just about everywhere, from novelty stores to warehouse clubs?They’re called “lucky bamboo,” and despite their ubiquitous presen
Understanding and Managing Cabbage Black Rot
06.06.2023 - 16:14 / gardenerspath.com / Nan Schiller
Understanding and Managing Cabbage Black RotBlack rot of cabbage is a bacterial infection that causes extensive damage to brassicas, aka cruciferous vegetables, including bok choy, broccoli, cauliflower, kale, and turnip greens.
Caused by Xanthomonas campestris pv. campestris (or Xcc), the bacteria enters a cabbage via a leaf pore or wound, such as a broken leaf. It spreads systemically, rendering all plant tissue vulnerable.
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In our guide to growing cabbage, we offer information on how to cultivate this cool-weather crop in your garden.
In this article, we zero in on cabbage black rot disease, ways to inhibit it, and how to deal with an outbreak.
Here’s what’s in store.
We’ll begin with an overview of bacterial black rot.
A Brutal Bacterial InfectionLet’s get right to the point. This disease is so pervasive and challenging that by the time we recognize it in the garden, there’s a high probability that it’s already too late to salvage not only the visibly affected plant, but most likely, your entire cabbage crop and other brassicas in the vicinity.
And after removing affected plants, the ground is contaminated and unable to sustain healthy cruciferous vegetables for the next four years.
Folks, this is huge!
The visible signs of the disease are unmistakable. At any point during a plant’s maturation, from germination to heading, the leaves can develop yellow or chlorotic patches on the outer edges or margins.
The patches form V-shapes that align with the leaf veins. After yellowing, the leaf tissue becomes necrotic, turning brown and dry.
At the same time, the bacteria exude sweet, sticky xanthan which clogs the veins,
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