Learn the signs of heat stress in plants: leaf rolling and cupping, wilting.
Once you have your lilac looking good, Penhallegon recommends that each year you clip off the faded flowers to stimulate new growth and more blooms next year.
Jun 14, 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. Cut 4- to 6-inch lengths ( cm.) of tender, new bushlopping.clubted Reading Time: 3 mins. May 20, If your lilac is a grafted variety, make sure you don’t prune below the graft union. Over the next couple of years, take out the remaining two thirds of the old stems. Your lilac bush should respond and fill in with lush, healthy new growth from the base, with more flowers on the lower bushlopping.clubted Reading Time: 2 mins.
LILACS – WHEN TO PRUNE Timing is one of the most important factors in pruning lilac bushes. Once your bush reaches 6 feet tall, yearly pruning should definitely become one of your must-do gardening tasks.
Your lilac bush will reach this height after a few years worth of growth.