Lavender bush

I have an enormous lavender bush which flowers profusely each year - it is in excess of 10 years and is very woody at the base.  Each year I cut it back to the bottom of the flower stems.  If I were to cut it right back to the roots after flowering this year, would it re-grow?  The bush is in a very confined area but it attracts so many bees that I would hate to kill it off.  I also love the lavender flowers.  Your advice please!image

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Posts

  • hogweedhogweed Central ScotlandPosts: 2,665

    Lavender does not take well cutting back into the old wood. You are doing the right thing by just cutting back the new soft growth. You could take it back an inch or so below the flower stems but not much more.

    'Optimism is the faith that leads to achievement' - Helen Keller
  • Many thanks hogweed

  • Dave MorganDave Morgan Posts: 3,122

    Joanne, there is a method of getting this bush back to a smaller size.

    If you use a mix of 50/50 sharp sand and compost, pile it over the base of the bush to a depth of about 6 inches now. By next summer you should have new growth appearing from the bottom, you can then cut the top growth away and resize it if you wish. It does work, you just need to be patient and not cut back till the new growth appears.

  • Or you could start again with a new plant.

  • FairygirlFairygirl Posts: 19,713

    Dave's method is a simple way of rejuvenating if you don't want to start afresh. It also works well with Dianthus. I  peg bits down with wire to fill gaps and  I expect you could also do that with lavender. 

  • chickychicky SurreyPosts: 7,186

    Dave - once the new growth appears do you then remove the sand/compost, or do you leave the new plant growing out of a mound??

    The Stone Age didn’t end because they ran out of stones ......
  • FairygirlFairygirl Posts: 19,713

    Think you leave it chicky because it becomes the new plant. I've left the grit/compost mix on the dianthus, although it's not as deep as Dave's description, but I think the theory's the same. The only problem is that the new plant will be higher - I've seen it done where the entire  plant is lifted first and a deeper hole created to put it in before doing what Dave describes. Then the new plant's at the original level, if that makes sense.  My dianthus are in pots so it was a bit easier to manage them. 

  • MrsGardenMrsGarden Posts: 3,736
    ohhh, thanks people, im off to do that now...
  • Dave MorganDave Morgan Posts: 3,122

    Yes chicky, leave it as the new roots will be below the soil level you have created.

  • after 10 years they do get very woody and don't look so good.i had the same,and made the hard decision to take them out and put new ones in.they don't take long to grow,a good excuse to go to the garden centre!

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