What Are These Light Spots In My Plants—they Appeared Over The Course Of About 2 Weeks (from Otherwise Healthy States).

Question

It’s happening to most of my mother and children plants, but not all.

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Answer 1

I'm seeing signs of overwatering stress. The soil looks very heavy with a high clay content. This will, often, lead to problems with agave. The soil is best amended with lots of sand, and some compost, to give it a much lighter texture. Unfortunately, clay soils can hold too much moisture under the surface.

Make sure that these do not get watered unless there is a very severe drought. If it rains often in your area, then this may be a battle for the remainder of the plants' lives.

It may be best to use biofungicides to counter the moist soil conditions.

Here are some articles that will help:

https://www.gardeningknowhow.com/special/organic/biofungicide-information.htm

https://www.gardeningknowhow.com/ornamental/cacti-succulents/agave/growing-agave.htm