For questions about trees: selection, planting, care, diagnosis, pruning, etc.

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3
votes
1answer
40 views

Why are my avocado's leaves drying out from the edges?

I recently moved into a house in the South SF Bay Area in California, with three large avocado trees. I've noticed that the leaves on one of these trees is drying out from the edges: Here's another ...
4
votes
0answers
45 views

What is this large, woody plant with compound leaves, found in zone 6a?

In the early summer of 2014, I was on vacation in Pine Grove (PA), and saw this large plant by the side of the road. It is huge. For scale, the pokeweed in the pic is about 7' tall. This weed is ...
3
votes
0answers
25 views

How often can I harvest coppiced black-locusts?

I would like to coppice some black locust trees (Robinia pseudoacacia) for fence post production. The conditions are fairly good. This is USDA hardiness zone 6b, with good clay based topsoil, and ...
3
votes
0answers
49 views

How much should I water an avocado plant guided by a moisture meter?

I have a moisture meter that registers readings from 0.0 to 9.9 (driest to wettest). I cannot find a listing for a potted avocado tree. Can you give me info as to what percentage is optimal for the ...