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I have two very old lilacs, one syringa vulgaris and one probably Ellen Wilmott.
I've been working on them for three years now, pruning, fertilizing (lime, compost both years; plus superphosphate last year) coddling, and I don't feel they're getting healthier at all. Took out 1/3 of the oldest wood the first year, ditto the second as it said to do in various books.
They're looking really spindly and bloomed even less this year than the previous two, even though I dead-headed them carefully two years in a row. This year I didn't even bother, since it didn't seem to have helped at all.
Any thoughts?
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