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Jun 16, If you cut back lavender in its first year, it will put energy towards growing leaves rather than roots and this will make it a weaker plant in the long term. Once your lavender plant has had one year to establish itself, you’ll need to prune it once a year.
The best time for when to prune lavender is in the spring just as the new growth is starting to come in. How to Prune Lavender.
Make sure the cutting is at least 3 in 7.
When pruning lavender, it’s important to start out with a sharp, clean set of pruning. Apr 12, Taking Cuttings from Lavender. Regardless of the type of cutting, you should always cut healthy, straight, vigorous stems for rooting. Choose stems with good color and no buds. Use a sharp knife to take a hardwood or softwood cutting measuring 3 to 4 inches ( cm.) stumplopping.barted Reading Time: 3 mins.
Mar 17, Typically, the best time to prune lavender is in late August, after flowering has finished. As the RHS says, it's best to do so annually. If you don't, the plants can become leggy and misshapen. Cutting back the old Lavender flower stems can be done anytime after flowering to remove the old flower stems and improve the plants appearance.
You should cut an inch or two into the green leafy growth to give the plant a more compact shape and encourage dense growth. Shape the plant into a slightly mounded cushion.