How do you know when basil is bad?
Although not a perfect test, your senses are usually the most reliable instruments to tell if your basil has gone bad. Some common traits of bad fresh basil are discoloration, a moist texture and a rotten smell. Basil will first become limp and then the green leaves turn black.
This basil disease is caused by a bacteria called Pseudomonas cichorii. Symptoms of bacterial leaf spot are black or brown spots that appear on the leaves and streaking on the stems of the plant. Bacterial leaf spot occurs when infected soil is splashed onto the leaves of the basil plant.
- Basil plant droop that appears suddenly on young plants is often caused by fusarium wilt, a fungal disease that causes stunted growth and droopy, wilted or yellow leaves. Eventually, leaves may drop from the plant. Fusarium wilt is difficult to manage and can remain in the soil for eight to 12 years.
- You can grow a lot of basil in a vegetable garden, where it is handy for a big harvest to make pesto. This is sweet basil. Basil needs 6 to 8 hours of sun; in the South and Southwest, it benefits from afternoon shade. Set out plants at least 2 weeks after the last frost in spring; summer planting is okay, too.
- There is no cure for plants infected with bacterial leaf spot. These organic fungicides will not kill leaf spot, but prevent the spores from germinating. Safely treat most fungal and bacterial diseases with SERENADE Garden.
Updated: 2nd October 2019