lilac seeds
Jessica Young
Updated on August 04, 2026
Growing Lilac Seeds
Lilacs produce seeds in seed heads. Lilac bushes can be propagated from those seeds. The seed heads form after the flowers finish blooming. They are brown, large and not very ornamental.
How long does it take lilacs to grow from seed?
Lilac Propagaton from Seed
At the end of the season, you can harvest the seed from the dead flowers after they have dried before they fall out of the seed pods onto the ground. Growing from seed takes time and patience. Most gardeners don’t want to wait four to five years to see the first lilac blossoms.
Is lilac hard to grow?
The common lilac, Syringa vulgaris, is well-loved for its toughness, reliability, and fragrance. In fact, lilacs are so tough that they can grow for 100+ years, often outliving the homes they were planted around. This deciduous multi-stemmed shrub (or small tree) has about 10 canes and produces flowers at eye-level.
How do you dry lilac seeds?
Pull as many seeds from your desirable blooms as possible to increase your chances of successful and healthy germination. Lay the lilac seeds out on a windowsill and allow them to slowly and naturally dry out. Some gardeners put their seeds in the oven to dry them faster.
How do you start a lilac seed?
Sow one lilac seed in each container at a 1/4-inch depth. Spread a very thin layer of horticultural grit over the compost mixture to insulate it. Drizzle water onto the mix until it feels very moist at a depth of 1 inch.
Can I grow lilac from a cutting?
Growing Lilac from Cuttings
Take cuttings of lilac bushes from tender new growth in late spring or early summer. Mature growth is less likely to root. Take several cuttings to increase your chance of success. Take cuttings in the morning when the weather is cool and the plant is well-hydrated.
Is there a difference between a lilac tree and a lilac bush?
To clear up any confusion, there is no difference between a lilac bush and a lilac tree, they are the same plant just called by different names.
Should I cut off lilac seed pods?
After their flowers fade, Lilacs make large seed-pods that also sap vigor from the plant, so instead, cut the blooms and enjoy their wonderful fragrance. Don’t prune after July 4 or you will be reducing next year’s display.
Do lilacs spread?
Lilac bushes spread through their seeds, but they also use suckers to produce new plants that sprout up into the soil. A single sucker can become a whole new bush, and any pieces of root that get left in the ground when you remove the plant can also spread into new bushes.
How long does lilac take to grow?
Most plants start blooming after three or four years but some may take as long as six or seven. The blooms for the first few years will be sparse but should increase with time. This is, obviously, not your problem if the plant you bought was flowering when you bought it. Pruning: Lilacs bloom on old wood.
How quickly does lilac grow?
The best time to plant lilac bushes is in the early fall before the ground freezes. They have a moderate growth rate of 1 to 2 feet per year.
Are lilacs poisonous to dogs?
Lilacs do not contain any chemicals that will poison animals or humans, nor do they irritate the skin. Even though lilac stems, leaves, and flowers pose no health threat to dogs, it is a good idea to keep your dog from chewing on the plant. Too much roughage may upset the digestive system in your pet.
How do lilac seeds spread?
After two to three weeks of flowering, lilacs begin to produce clusters of brown seed pods, each of which may contain dozens of individual seeds within its protective casing. The seed pods may dry on the branch for several weeks before they are ready to disperse their seeds.
Can you clone lilacs?
Lilac bushes (Syringa vulgaris) have a reputation for being difficult to propagate, or clone. Although the cloning method is easy to execute, lilacs have certain genetic traits that limit the chances of the cutting taking root. It’s possible, but to increase your chances, start several cuttings at once.
Can you bonsai a lilac tree?
Lilacs make great Bonsai, the trick is to find a lilac with a big enough trunk to make it worth while. Lilacs generally have large leaves and large flowers so the finished tree usually will be on the large side. The following lilac has smaller leaves and flowers and makes a medium size Bonsai.
Can you grow a bush from a seed?
Seed is a cheap way to produce large numbers of new shrubs or trees when starting a new garden. It is also fun to try growing trees from seed, although patience is required as it takes many years to grow a large tree.
How do you grow a lilac bush?
How to Grow Lilacs: Recap
Choose lilacs that will grow well in the space you have available.Prepare the soil by adding Miracle-Gro® Garden Soil for Trees & Shrubs.Plant lilacs in full sun in moist, well-drained soil.Feed lilacs in spring with Miracle-Gro® Shake ‘n Feed® Flowering Trees & Shrubs Plant Food.
How do you make lilacs grow faster?
You can make your lilac bush grow faster by ensuring that it has enough sunlight and that it’s planted in good soil. Watering the lilac bush properly without watering it too much is also crucial. Giving the lilac bush fertilizer in the spring can help to give it a boost as well.