Question from a user:I have my lettuce rotting at the foot. It's lettuce, it's covered with a white felt at the foot and it looks like rot. What is that ? and how to get rid of it all? I'm afraid of losing all my lettuces.
White thatch with rot at the collar and on the lower leaves on your lettuces is a fungus, but hard to tell at first glance; either a sclerotinia or a botrytis, or a rhisoctonia. That said, the result is the same, often the plant dies…if nothing is done. First, as a preventive measure, avoid waterlogged soils. The lettuce plant should not be too buried when planting . Morning waterings are preferable, copious if necessary but spaced out. In organic farming, preventive treatments are done with nettle and horsetail manure in watering. The practice of crop rotations is beneficial.
If you treat with chemicals, pay attention to the pre-harvest treatment time , they can last several days or even weeks! In principle, these products are no longer on sale for the amateur gardener, but there is no doubt that there are still stocks here and there...
A rotting lettuce… What did you die of?
