Trim and tidy these fragrant woody perennials as soon as the bees lose interest, says Sally Coates from Norfolk Lavender.“With a young but established plant, cut the stems right back after flowering at the end of summer.“At Norfolk Lavender, we give another light prune in early spring, mid-March.Why prune?When to prune?Pruning tools: Shears, secateurs.2 CUT OUT OLD GROWTH Carefully cut out the old growth above the young shoots to open up the middle of the plant. .
How to Prune Lavender
An annual pruning is an important step for long-lasting lavender (Lavandula spp.and hybrids) plants.Without it they grow a large, lanky, woody base that can split open — it looks bad and shortens the plant’s lifespan.Start pruning lavender when it’s small to encourage your new plant to focus on making more roots and branching stems, which results in a nice mounded habit later.The dotted line in the illustration above shows you how to cut foliage and any flowers back by one-third to one half before planting.With the outside stems slightly shorter than the center ones so the plant will have a mounded growth habit from the start.Lavender grows quickly, so by the second year, the plant should be about twice as big and ready for pruning once the blooms are spent (or cut blooms while they're still fresh and make a luxurious lavender sugar scrub!).Follow these simple steps to keep your lavender looking great for years to come.Get a second flush of blooms quicker on reblooming varieties with deadheading.That encourages tender new growth which will be killed by winter cold, weakening the plant so it might not make it through another season. .
POST UPDATE: Our “New” Lavender Hedge Is Flourishing!
I’ve definitely learned my lesson and will diligently prune all five of these Lavender plants low next spring once I see the first new leaves.Please review the original post for more detail about maintaining this beautiful, aromatic herb that is perennial in many areas.For several years now, I’ve pretty much ignored my lavender plant and focused my attention on many other projects.My uninformed assumptions were that “it’s growing well, it flowers beautifully and smells amazing; so I guess we’re all good.” Not so fast, late this summer I noticed thick, brown stems at the base of the plant.So, doing what all constantly learning gardeners do, I researched and found out that pruning is a very big deal with lavender!It needs to be properly pruned yearly to maintain its appearance and avoid large woody stems.I’m starting to feel sorry for this lavender, so as an apology, it’s going to get a meticulous pruning and a promise not to ignore it again.Notice the exact point where there are green lavender leaves but there are brown stems just below.Even though I was not a diligent caretaker, I really have enjoyed the beauty and scent of my old, name unknown, lavender plant.Since my old lavender plant has seen better days, early next spring I will transplant it to the sunny edge of my woodland garden.Lavendula x intermedia grosso, is the Latin name for my recently purchased Lavender shrubs.Produces large, deep violet flower spikes up to 6 inches long.This time, I have carefully filed one of the detailed Lavender plant tags for future reference. .
How to Trim Back a Large Lavender Plant
develop a pleasant mounded shape that helps showcase the spikes of small purple flowers during early summer.Prune the spikes back to within the mound of the plant so the cut ends of the stems don't protrude above the main lavender bush.4 Prune large lavender bushes back each spring to control their size, but don't remove more than one-third of the height in a single year even if the plant is badly overgrown. .
Wait to prune lavender or it might kill plant
I have not pruned them before.Unpruned lavenders become woody at the center and do not bloom nearly as much as ones that have been pruned properly so summer pruning every year is important.Ideally right after first bloom in the summer so that it has time to regrow before frost.This type doesn't do well with heavy pruning and responds best to a light pruning after bloom.These shrubs bloom later than the English lavender, and shrubs have a longer flower spike than the English types, but they're not as hardy.Never prune this type back to the woody part of the shrub or you might kill the plant.If your plant is this type of lavender, and it's three years old or older and has never been pruned, it may not survive heavy pruning. .