The lilacs are all very old, came with the house.
I'm saving a few--thinned out/cut back etc. They get sun, they bloom and have greened up considerably with amendments.
The others are/were buried in tree-of-heaven, siberian elm, and chokecherry thickets. It is/was a mess. They don't get enough sun. The prunus and ailiathus don't suffer from chlorosis, too much, but the elms and lilacs do/did rather severely.
Odd tense on account of the fact that we cut down/ripped out the entire west side of this mess this fall.
