Find out when to prune a butterfly bush and how to make the right cuts to enjoy more heyday on this tight - grow bush .
Carson Downing
One of the quickest - growingflowering shrubs , a butterfly stroke bush can easy put on 5 feet or more of new growth in a single season . find out how and when to prune a butterfly shrub can avail you keep all that vigorous growth in chip . Regular pruning is essential not only for size of it management , but also is important if you ’re acquire an older cultivar that can reseed wildly and escape into native ecosystems . These butterfly stroke bush prune wind will help guide your cuts .

Credit:Carson Downing
Because it reseeds prolifically , butterfly bush is considered an invasive plant in many areas of the U.S. Check with your local university extension power before planting it . If it is encroaching in your domain , choose for one of the newer varieties that are virtually seedless orplant a aboriginal alternative .
When to Prune Butterfly Bush
The best time to prune a butterfly bush is in previous spring , right after the buds swell and the leaves begin to emerge . Winter dieback is mutual on these shrubsin areas with very stale wintertime . By hold off until the leaf appear , you ’ll know which section of the plant survived the winter and can prune consequently .
Tips for Pruning Butterfly Bush
When you ’re ready to snip your butterfly stroke Dubyuh , here ’s how to make the good cutting to keep your shrub healthy and flourishing .
1. If Invasive, Consider Removing
Butterfly bush ( Buddleia davidii ) is an enclose species from China that has take to the woods garden and spread aggressively in rude area across many parts of the country . So unless you ’re turn a newer cultivar ofbutterfly bushbred to have almost - sterile seeds , consider removing the flora altogether to foreclose further harm to aboriginal habitats . Otherwise , be fain to stay on top of remove pass off peak before they set come .
If you have it away the property of butterfly stroke bush but want to grow an environmentally favorable variety , look for plants in the ‘ Lo & Behold ’ series and the ‘ Miss ’ series . These cultivars have sterile seeds so wo n’t fan out sharply .
2. Be Patient
Butterfly bush is one of the last works to leaf out in bound . In colder realm , it might not show signs of life until as of late as the third week in June . Give your plant time . As temperatures moderate and heat sets in , it will grow quickly . If there is no sign of life after the third hebdomad of June eliminate and the base feel juiceless and unannealed , your plant is in all probability drained .
3. Reduce the Size
The warm your growing region , the more important it is for your butterfly crotch hair to bepruned back in natural spring . When it is not swerve back , this vigorous shrub can easily grow to 20 substructure tall with flowers only on the top of the canopy .
commence pruning by removing about one - third of the shrub ’s branches to ground tier . When selecting branch to skip back , take the old stalk . Next , cut back all continue branch to 3 foot improbable or less . This pruning might feel utmost , but it ’s essential to get the prime to eye level and give the plant good form all time of year long .
4. Remove Spent Flowers
Curb rampant reseeding by regularly pruning pass prime . Thispractice is call deadheading . trim back the blow over prime stalk back to the first set of leaves . New flower shoot will form below the cut . Deadheading also can encourage your butterfly stroke bush to preserve blooming into fall .
5. Don’t Hesitate to Prune Significantly
Butterfly bush digest uttermost pruning with ease . Cutting an overgrown industrial plant back to just a few inches marvellous in early spring is a great means to rejuvenate it . Incolder Hardiness Zones , butterfly bush often naturally die back to the earth in winter , and have no bother regrowing from the source .
Expect the bush to regrow quickly once the weather warms up . It ’s not unusual for a butterfly George W. Bush that is shorten back to ground level in outflow to stand 5 to 8 feet marvellous at the last of the growing season . efflorescence wo n’t be compromise because this tough shrub blooms on " new wood , " which means stems produce during the current develop time of year .
6. Prune Smaller Cultivars Lightly
Many new , near - sterile butterfly bush cultivars mature at just 2 to 3 feet marvellous and encompassing . They do n’t expect significant one-year pruning . Keep these small shrubsneat by pruning them light in spring to achieve a pleasing shape . Remove wayward stem and reduce the sizing as need so the plant will complement the available grow space .
7. Make Time to Prune
Do n’t be tempted to pass over pruningyour butterfly bush , especially large cultivar of this tight - growing industrial plant . It takes less than 20 minutes to prune a single large butterfly bush . The relatively soft forest and sluttish - to - entree limb structure make for fast work . Investing a little time cut back in spring will lead to a compact shrub with more bloom at eye stratum where they can be enjoyed from summertime into fall .