How to Grow Lilac Bushes from a Cut Flower

According to North Dakota State University, lilacs have been prized by Americans since the 1750s when they were introduced in American Botanical Gardens. Common as a decorative shrub in yards throughout New England, its highly fragrant blooms scent the air for two weeks in spring. Many are propagated by shoots sent up from the roots off the main bush, but lilacs can be started from stem cuttings taken in the spring and grown in the house until ready for planting in their permanent location.

Things You'll Need

• Pruning shears/sharp knife
• Seed starter
• Plant pots
• Plastic bags

Instructions

1. Take 4- to 6-inch stem cuttings from new growth in the spring. Two weeks after blooming is the ideal time for cuttings, but you may be successful in rooting the stems from the cut flowers in your spring bouquet.

2. Remove leaves from the bottom 2 inches of the stem. Several leaves should be left in place to provide the energy needed to start new roots.

3. Dip the cut end into rooting hormone to a depth of 1 inch. Tap lightly to remove excess rooting hormone powder.

4. Pot in seed starter so the area with rooting hormone is completely under the soil. Firm the soil around the base of the cutting with your hand.

5. Water to thoroughly moisten the soil. Cover with a plastic bag and place in a warm area that receives filtered light. Avoid placing cuttings in direct afternoon light as it will overheat.

6. Keep soil evenly moist for three to six weeks. Check for root formation by tugging gently on the stem. Resistance to your efforts indicates the cutting has formed roots.

7. Remove the plastic bag and set in a sunny location. Gradually move your lilac to the outside by setting it out in a sheltered location for a few hours a day. Increase the sun exposure and length of time outside for several days before planting in the desired location.

Tips & Warnings

• Take more cutting than you desire. Lilacs can be difficult to root.

• Avoid taking cuttings late in the summer or in fall as they may not root.

Resources

• North Dakota State University/lilacs