How Tall Do Lilacs Get?

Question

I Need 2 Know 4 A Research Report!!!

Answer 1

I have the traditional common variety lilac. It is as tall as the second story of my house. In the spring I can smell it's beautiful scent through the upstairs window easily! It is close to 20 feet!

Answer 2

Lilacs are a prunable and managable planting which means it can be maintained a almost any height. The minimum height would be between three to four foot high and an equal width.
I would tell you that as a Designer I attempt to put a Lilac in the open, away from a house, where it can actually grow without shaping. Pruning of this plant, like a Forsythia, is a crying shame and reduces the flowering of the plant. It is a free forming, free growing, and vig. plant when left alone to grow.
The plant needs full sun to appreciate it's potential. The bottom line is that a Lilac can, and often is, treated as a hedge-type plant. It is a shame for the beauty of the plant can be realized when the only pruning is the removal of dead wood and dead flowers each year. Left to it's own, given soil, moisture, and depth of winter the majority of Lilacs will grow about equally height and width-wise at a rate of anywhere from 6" to a foot/per year depending on the conditions and any fertilizer used. Hope it helps.

Answer 3

The problem with this question is that there isn't just one kind of lilac bush. There are lots of varieties of lilac bushes. I have several different kinds in my yard. I have a dwarf lilac bush that stays 3 feet tall (without pruning) and one that keeps getting taller every year - it is about 8 feet tall right now. I have seen lilac bushes that look like trees - taller than houses. I am sending you a link that tells about the many different varieties of lilacs.http://www.gardenersnet.com/lilac/lilac04.htm

Answer 4

Most get about 4 to6 feet tall however they can get to 10 feet tall.

Answer 5

Mine is 20 feet tall.