With a name like halo blight, you might expect to read about little cherubs, but that’s not the case. The bacteria responsible for halo blight are no angels.
Leaves are not the only place damage occurs. Pods can also become infected, making them inedible. Pods infected with common blight have lesions with red or rust-colored borders. Symptoms of the other two diseases are difficult to tell apart, as both have the same water-soaked lesions on the leaves.
Managing halo blight
As with other diseases, prevention is the easier way to go. Since moisture is needed for halo blight to develop and spread, avoid overhead watering and save the sprinklers for your lawn. Furrow irrigation will direct water to the roots without creating a potential disease site. Halo blight is most likely when temperatures are between 68 and 74°F (20 to 23 °C). Unlike many other blight diseases, halo blight bacteria prefer these slightly cooler temperatures.
Use these tips to prevent halo blight in your garden:
Fixed copper or Bordeaux mixture treatments may prevent halo blight.
You can grow a surprising amount of food in your own yard. Ask me how!
To help The Daily Garden grow, you may see affiliate ads sprouting up in various places.
You can also get my book, Stop Wasting Your Yard!