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« on: April 22, 2020, 03:18:07 AM »
Wow, Oolie, thanks a bunch -- this is exactly what I needed to know.
Some more background:
Yes, my backyard is extremely clay-y, and drainage is poor in most places. I killed several avocados before I figured that out.
Since moving in 6 yrs ago, I've completely transformed the backyard. I've completely covered the ground with cardboard (for weed protection) and woodchips (for aesthetics, as well as the addition of organic matter and all the other benefits of compost). My stone fruits, mangoes, and (especially) avocado trees are on mounds and/or raised planter beds I built myself, filled with a 50/50 amended topsoil/planter mix. Doing this, I have managed to keep 7 avocado trees healthy enough to start to bear fruit -- I expect to enjoy my first ones this summer (two gorgeous Lamb-Hass). Five of the avocado trees are flourishing and the other two are rebounding.
My citrus trees are planted in the clay soil, but they seem to flourish no matter what I do. Except for a little leaf curl here and there, and some dry grapefruit, it seems I can do no wrong.
And yes, I'm on Helix water.
So I'm not too worried about weed seed, since there's not a lot of viable places it can root (but I'm already fighting Bermuda grass in my front yard).
Do you still think the horse manure compost is a bad idea? How would I test the soil for salts? And why would you not use it for citrus?
I'm very appreciative of your help -- I'm learning so much as I go...