Gardeners who would like to have more of the delicate presence and wonderful fragrance of the buddleia in their garden can use the time in late summer (August and September) to propagate the beautiful shrub from cuttings. If you are one of them, you will find valuable information in this guide on how to propagate buddleia and what you need to consider when doing so.
In late summer you can still propagate lilacs from sticks
The beautiful perennial attracts butterflies
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With its beautiful and intense shades of purple, blue, pink and snow white, this ornamental perennial has earned its name as the queen of garden shrubs. The butterfly bush is known in the cosmetics industry for its wonderful scent.
The clear favorite among the summer bloomers, however, is the variety “Buddleja” (summer lilac). The genus includes about 100 species native to tropical and subtropical regions of the world. Most of these are shrubs and a few are considered shrubs.
Lilacs attract butterflies
With its lush abundance of flowers and variable colors, the summer lilac delights the eye during its flowering period between July and September.
When should you plant summer lilac?
You can use shoots of the shrub for propagation in the fall, as long as there is no threat of frost. However, remember that your lilacs should be rooted before winter so they can survive the cold weather.
The young plant should have rooted before the first frost
You can also grow lilacs from seeds. If you prefer this method, be sure to consider the important points as outlined in the guide on the subject. Learn how to grow butterfly bushes from seed.
The queen of shrubs
Multiply summer lilacs in water
Many lilac fans love to adore the glory of the buddleia in vases. In fact, lilacs can be propagated after the cuttings have been in water for some time. But the process is not exactly simple.
- Gather some healthy shoots with buds for sticks.
- Soak the sticks in water for about 2 hours and place them in pots.
- Take the cuttings 1/2 inch below the lowest bud so you have a full bud at the bottom of the cutting.
- Cut the sticks at a slight angle above the highest bud. You don’t want buds at the top because they are flower buds and not leaf buds.
- Prepare a vessel with tap water, dip the sticks in the water and leave for 2 hours.
- Once well hydrated, snap the ends and place each cutting in a root activator solution or rooting powder directly for 5 seconds.
- Line well-drained growing pots or boxes with soil.
- Position about two-thirds of the cutting below ground.
- Water profusely, place the pot on the windowsill and within a month the root system and the first tender leaves will form.
Position at the window
Propagate buddleia by cuttings
If you want to propagate lilacs from cuttings, you only have a tiny window of opportunity in the spring when you can obtain suitable cuttings. It is best if you cut off fresh green shoots in April. It takes about 6 to 8 weeks for the cuttings to start rooting.
The appropriate time for this method is the early period
- Take a green cutting no more than 1 cm wide and no more than 7 cm long.
- Remove the leaves at the bottom.
- Tuck the ends in rooting powder.
- Make a hole in the growing medium of the flower pot or box with your finger.
- Plant the tender cutting in the hole. Prepare enough seedlings this way because you will have a high loss rate.
Buddleia propagate from green shoots in spring
Propagate buddleia with root ball
Another method of propagating summer lilac is by root ball propagation.
- Dig a planting hole twice the size and depth of the buddleia root ball.
- For soil that can compact, place a thin drainage layer of gravel or sand deep in the planting hole.
- Put the root ball in the planting hole and fill it up with high-quality potting soil.
- The young plants need about 20 liters of water per plant.
Propagating summer lilacs with root balls
How do I overwinter my summer lilac?
The hardy garden perennial needs winter protection, especially in regions with very cold winters. As a rule, older shrubs are more robust. For this purpose, cover the lilac with protection from fleece or brushwood.