How to save my Holy Basil plant
My holy basil plant has several problems but mainly the stem from the bottom is turning blackish but there seems to be some new growth throughout the plant. Please if you could tell me what's wrong & how to fix it
Certified GKH Gardening Expert
Basil is often subject to a number of diseases, and yours sounds like fusarium wilt. The only recourse is to destroy the plant and its soil.
This article should help you deal with your plant's problems: https://www.gardeningknowhow.com/edible/herbs/basil/basil-diseases.htm