My Lilacs are done blooming but the trees and bush looks terrible - almost like dead branches! And I want to hack it down. . . but don't want to kill it. What should I do and when? Thank you so much for your time and help!!!
Hopefully, this article will help: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/pruning-lilac-bushes-when-to-trim-lilac-bushes.htm
How can I propagate lilac bushes?
This article explains how to divide a lilac: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-care-growing-and-planting-lilac-bush-plants.htm
Lilacs can be propagated by cuttings. It is difficult and uses rooting hormones, mist systems and bottom heat. Division is the easiest of propagating lilac plants.
I have two lilac bushes that are supposed to be suitable for San Diego. The blue/lavender one has only a few tiny sprays. The white one, which has done better, has shown split bark, as has the blue one. Obviously, the articles about freezing do not apply. This year many of the leaves on the white are curling. I can find no pest on them, even under a magnifying glass. Am I missing something?
The following link will take you to a host of lilac related articles: http://www.google.com/cse?cx=012078378210706707791%3Af1h5n_k1r5e&ie=UTF-8&q=blackberry+problems&oq=blackberry+problems&gs_l=partner.3..0i8.134411.138674.0.139862.19.14.0.5.5.0.187.1725.2j12.14.0.gsnos%2Cn%3D13..0.0.4333j1257669j19..1ac.1.kQAzbvAmZA8#gsc.tab=0&gsc.q=problems%20with%20lilac
Hopefully your answers can be found in one of the articles.
What kind of soil is good for lilac bushes? What does the pH need to be?
They like well drained, organic rich soil that is slightly acidic to moderately alkaline.
I have a 30-year old lilac tree that has gotten far too big in the mantle (15/20 ft across) with a height of 20 ft (approx). I want to reduce its size both in height and mantle. How severely can I cut this tree back, and when can I do it? Many thanks.
I would not prune it back by more than 1/3 in any one year. Cutting it back further than that could harm the plant. This article should help with pruning: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/pruning-lilac-bushes-when-to-trim-lilac-bushes.htm
I am thinking of planting a lilac. I saw a white one in a nursery and was told that they "grow fast." If the plant starts out 3 feet tall, how long will it take, on average, to get 3 feet? 4 feet? It will be in my backyard with full sun almost constantly. I live in Southern California so the weather is pretty much constant, in the 70's and 80's all the time.
On average, most lilac varieties are medium growers, meaning they grow about one to two feet annually.
My dog chewed a branch off my 2-yr old lilac bush. The piece he chewed off grew buds on it. Can I plant it or put it in water to root it, or is the broken off branch a lost cause? The branch was left on the ground for the better part of 2 weeks but it is budding out at the same rate as the rest of the bushes.
While I can't say with certainty that it will survive, you could try to root the cutting. This article should help you with that: https://www.gardeningknowhow.com/ornamental/trees/tgen/how-to-root-cuttings-from-various-shrubs-bushes-and-trees.htm