The best results I ever had was a diameter 2x the crown diameter and a minimum of 6 - 8 inches.
Of course, I had sun baked, hard-ass clay soil that was like a brick wall. After I mulched new trees as above I saw the best performance I ever saw. One year later, I hardly had to water and the soil under the mulch was dig-able with my hand.
Yes! Mulch does wonders for the soil, over time. We're in texas, so brutal summers. So mulch is a must.
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Then go way deeper than 3”. 6-8 inches if you can. I was doing 3 and I was in the Texas panhandle. It didn’t do shit until I went all in.
More is better🤙
