Take the 2-minute tour ×
Gardening & Landscaping Stack Exchange is a question and answer site for gardeners and landscapers. It's 100% free, no registration required.

I have an old lilac bush that I would like to propagate. Suckers work, but I would like more control over amount, uniformity, and size. I had heard that they root readily from hardwood and semi-ripe cuttings, but after several failed attempts, I came here for some help. So, how are these cuttings taken?

share|improve this question
add comment

2 Answers 2

up vote 3 down vote accepted

From this site

Propagation by cuttings is one of the most popular ways to propagate lilacs. Cuttings should be taken when new green terminal shoots are produced. They should be four to six inches long, but should not be left out too long, because they will wilt easily and die. The cutting should be dipped in a rooting hormone like IBA (Indolebutyric acid) which aids the plant. The cuttings can be placed in a media with peat, vermiculite and perlite. Each cutting should contain 2-3 nodes, which are the growing points where the leaves are attached. The leaves aid in rooting by producing carbohydrates for the rooting plant. The cuttings should never be allowed to dry out and should be kept moist at all times. The cutting should root within 3-6 weeks. Once roots appear, you can place the plant outside in a desirable location.

What should be noted is that you need strong shoots that have a little bit of woodier stem and you need the strongest rooting hormone you can get. It used to come in three strengths and I recommend the strongest.

Take cuttings in the spring.

Try various rooting mediums but constant moisture, higher humidity levels and bottom heat are required. The quote recommends an artificial soil-less mix but I would also try floral foam, glasses of water or even pure perlite.

The trick with cuttings is lots of humidity to compensate for the lack of roots, lots of light and air movement to prevent mould. For many this means a greenhouse.

share|improve this answer
add comment

Well I must have gotten lucky because I was doing a clean up pruning of my dwarf lilac in early spring here in zone 4b. I took a cutting that was crossing through the plant and for fun just stuck it deep in the soil next to my other lilac. What do you know? It now has leaves and flower buds and looks pretty happy. No rooting hormone either.

share|improve this answer
2  
Having leafed out and producing flower buds is different from rooting. Have you actually seen roots? –  Eric Nitardy May 6 '13 at 2:43
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.