Question: I have 5 large bushes of lavender in hidcote, munstead and grosso varieties, but all have not flowered the past 2 years. they are about 4 yrs old (zone 5 CT) getting ample sun, but possibly not good enough drainage as they are planted in a bed heavy with a sweet peat (dark bark) mulch. I'd like to save & renew them. Will pruning now help? I cut the dried out stems earlier in April to no avail.
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