TOMATO LATE BLIGHT
This is a BIGGIE. No, it is not soil borne and it is not a virus. It is a fungus, blowing in the air via spores from other gardens whose tomato plants are infected with late blight. You will see leaves with tan, wet looking spots and stems with dark brown or black lesions. Yep!!!! That is Late Blight. Remove every leaf that does not look perfect, bag them and toss them in the trash. Do this each time you come to your garden. If you don’t, Late Blight will not only take your tomato plants but those of your garden neighbors if not the entire garden. If you see these symptoms when plants are very small, remove that plant and destroy it. Replant in another spot. If you see symptoms when plants are mature, quickly call us.
NEVER COMPOST ANY PART OF THE TOMATO PLANTS, NOT EVEN THE ROOT, THEY CARRY TOO MANY DISEASES
This is just another fungus. We have the perfect climate for mildew, hot days and cool nights. Over head watering promotes mildew while watering at ground level and early in the day keeps mildew at bay. Preventive measurements have to be started by May 1st so go to a nursery for advice. If they suggest sulfur, and you want to use it, spray every two weeks throughout the tomato season. Cut the dosage in half for your squash. Cucumbers do not like the sulfur spray. Skim milk can be sprayed on the leaves of squash and cucumbers, after removing all mildewed leaves.
NOTE: As with all diseases, removing the infected leaves goes a long way in helping halt the proliferation of that disease. Before you spray or treat with anything, a 100 percent clean up of all disease from the plant is a must in controlling the disease.
The above information is what we deal with most of the time. As far as any other diseases, please take a sample to the nursery and get a diagnosis. You also can ask any garden member what they think your problem is as we have many seasoned gardeners at LBCGA, some members are Master Gardeners. In addition, pictures of pests and diseases are at the gazebo. You can learn just by looking at your plant and the pictures. Plant monitors do walk the gardens looking for possible disease problems, we then notify you of the problem and it is up to you to handle it. You may be asked to remover the infected plant. Remember your plot affects your neighbors. Close observation of your garden plants and taking action early will go a long way to having healthy plants and an abundant crop.