When Should My Asian Lilies Be Trimmed Back?

Deadhead your lily when the plant is in bloom to encourage new growth and prevent it from becoming too woody. Cut the flowers when they open and take them indoors to a vase, or maintain them on the plant and cut them when they fade. Make the cuts at the base of the plant.

For Asiatic lilies, you should cut back dead or brown leaves at the base of the plant to promote new growth and keep the plant healthy. When planting Asiatic lilies in the springtime, they bloom from May through September. To prune these lilies outdoors, inspect the plant, remove dead or damaged stems, cut back after flowering, and dispose of pruned material.

A simple rule of thumb is to cut no more than the top third of the stem. In the fall, when the leaves die back, the energy is sucked down into the plant. If you lived in Britain or Europe, remove the stems as soon as they are dead to avoid the dreaded Red lily beetles.

You should cut back daylilies after the growing season has concluded and wait until there are no more blooms on your plant to begin pruning. In the fall, when the stems and foliage are unsightly, cut the plant back to the ground. Propagating Asiatic lilies is done after the first frost of the year, when the foliage is dead and comes off easily with pulling.

In conclusion, deadheading your lily when the plant is in bloom is not necessary for their continued growth and health. Instead, you can tidy up the plant by snipping any fading flowers under where the petal stocks meet the stem.