14+ Brown Spots On Basil Stem. I googled and it seems that basil does turn woody after some time but the leaves on these browned stalks look really unhealthy, like i haven't been watering them. I sprayed them with garlic because i thought it might be a fungus but it doesn't seem to help.
This is the normal progression and the plant will still produce fresh leaves for some time if cared for.
Basil is prone to attacks from natural enemies and environmental on the leaf or stem. Symptoms start as dark brown, irregular spots on both upper and lower leaf surfaces. This may not be something that may need urgent attention however, as we can not ascertain the cause of these spots, it is best to have these assessed by a dermatologist early on. If you notice brown spots on your neck, they are most likely a type of hyperpigmentation, which is referred to as solar lentigines.