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Tag: butterflybush

How Can I Encourage Fuller Growth in Butterfly Bush?

“My butterfly bush was so rangy last year. How can I get it to be fuller and to attract more butterflies?” Question from Diane of Newark, Ohio

Answer: Several things can cause butterfly bushes (Buddleia davidii, USDA Hardiness Zones 5-9) can have flowering and vigor troubles. Here are the main culprets.

  1. Age: If your butterfly bush is an older specimen, it may be petering out. They are not the longest-lived shrubs, and as they age they often show less vigor and flowering. Many may only thrive for 10 or 20 years, or less. If it’s time to replant, I recommend that you try Proven Winner’s Lo & Behold® ‘Blue Chip’ butterfly bush. It’s sterile, so it does not become invasive, and it blooms nonstop all summer with wands of purplish-blue that draw lots of butterflies. It is also more compact, at 2.5 to 3 feet high. (Click here to discover more sterile varieties.)
  2. Light: Make sure your plants get full sun. Less light puts a damper on flowering.
  3. Soil: Well-drained average soil is best for butterfly bushes. If your soil has drainage issues or is heavy, then you may need to move or replace your plant.
  4. Pests: Various pests can reduce the vigor and flowering of butterfly bush. Tackling them early will help your plants perform better. (Click here to learn more about common pests.) Fortunately, butterfly bushes have few disease problems.

From there, click on this link to learn more about pruning and spring care. 

Happy gardening,

Jessie Keith

Black Gold Horticulturist

When is the Best Time to Prune Buddleia in California?

“When is the best time to prune Buddleia?” Question from Angie of Fort Bragg, California

Answer: In your coastal Mendocino County location, I would cut your butterfly bush (Buddleia spp.) back when your cool, wet winter hits. Butterfly bush does not look its best when chillier temperatures hit, even though it remains evergreen to semi-evergreen where you live, so prune it back by 1-2 feet once it stops blooming well, and its leaves start to flag. This will also make your garden look tidier during the chillier months and result in a more compact shrub. And, because it blooms on new wood and grows post-pruning quickly, you can feel confident that the shrub and flower buds will not be harmed.

Another factor is that butterfly bush self-sows prolifically and is considered invasive in your area. Pruning it back and removing its old buds before seedset will also reduce the chance of spread in your garden and beyond.

I hope that this information helps!

Happy gardening,

Jessie Keith

Black Gold Horticulturist