Lavender pruning: the secret to a fragrant and healthy garden 1 Best time in spring MarchApril: remove dry or frost-damaged branches and trim back about one-third of the plant without cutting into the woody stems. 2 Best time after flowering JuneJuly: prune more deeply just above the green foliage to encourage a second bloom. 3 Tools: use clean, sharp shears to make precise cuts and avoid disease. 4 Shape: give the plant a rounded form so it grows compact and balanced. 5 Flowers: regularly remove faded blooms to extend the flowering season. 6 Growing conditions: plant lavender in full sun, in well-drained, poor soil. Water sparingly and protect it in winter with mulch. With these simple steps, your lavender will stay vigorous, aromatic, and beautifully in bloom throughout the season.