After the flowering period of Brunnera, there are a few steps you can take to care for the plant and ensure its continued health and vitality. Here is a detailed guide on what to do with Brunnera after flowering:
1. Remove reverted (all green-leaved) sections:
– Variegated forms of Brunnera often produce reverted sections where the leaves are all green instead of variegated.
– These sections should be carefully removed to maintain the desired variegation.
– Use sharp, clean scissors or pruners to cut off the reverted sections at the base of the stem.
– Take care not to damage the healthy, variegated parts of the plant.
2. Cut back old stems:
– Once the flowering period is over, you can prune back the old flowering stems.
– Use clean pruning shears to cut the stems back close to the base of the plant.
– This will help tidy up the appearance of the Brunnera and encourage new growth.
3. Cut the whole plant down in November:
– In November, after the growing season has ended, it is beneficial to cut the entire Brunnera plant down to ground level.
– This should be done with caution, ensuring that you do not damage the roots.
– Using sharp pruners or shears, cut all the foliage and stems down to the ground.
– Removing the above-ground growth will help the plant conserve energy and prepare for the dormant period.
Additional tips for caring for Brunnera after flowering:
– Mulch: After cutting the plant down in November, consider adding a layer of mulch around the base of the plant. This will help protect the roots during the winter months and provide insulation.
– Dividing: Brunnera plants can become crowded over time, leading to decreased vigor and flowering. Every few years, consider dividing the plant to rejuvenate it. This is best done in early spring or fall when the plant is not actively growing.
– Watering: Although Brunnera is generally a low-maintenance plant, it benefits from regular watering during dry spells. Ensure the soil remains consistently moist but not waterlogged.
– Fertilizing: Apply a balanced, slow-release fertilizer in early spring to provide the plant with essential nutrients for healthy growth and flowering.
Personal experience: I have been growing Brunnera in my garden for several years, and I have found that following these post-flowering care steps has helped maintain the health and appearance of the plants. Removing reverted sections and cutting back old stems has allowed the variegation to remain vibrant, and cutting the plant down in November has promoted new growth in the following spring. Additionally, dividing the plants every few years has helped prevent overcrowding and encouraged robust flowering. Brunnera is a beautiful and resilient plant that rewards proper care with a stunning display in the garden.