The honest answer is that it depends on the species, so the euonymus growth rate swings from slow to very fast. Plant a wintercreeper and a burning bush on the same day, and the gap shows up within one season. The wintercreeper can blanket a whole slope while the burning bush of the same age has barely filled out its frame.
If you want a fast growing euonymus, the climbing and trailing wintercreeper is your pick. It races ahead because its whole job is to spread and cover ground. The shrubby deciduous types take their time and build up a denser, slower frame. You choose your pace at the garden center, not later in the bed.
Form drives the speed you get. A groundcover or climbing wintercreeper sends out long runners that root as they travel, so it gains ground fast and fills gaps in a single year. The upright shrub types put their energy into a tighter shape and a thicker stem. That means you wait longer for the same bulk, but you also get a plant that holds its form without constant tying or training.
Light and soil change the pace too. A wintercreeper in full sun and decent ground will outrun the same plant stuck in dry shade. Give any euonymus steady water for its first two seasons and you push it toward the top of its range. Starve it and even the fast types slow down to a crawl, so the species sets the ceiling but your care sets where it lands.
Here are the numbers you can plan around, drawn from Clemson HGIC 1063. They sort the genus into a clear range so you know what to expect before you dig the hole.
So your euonymus growth speed maps straight to the type you buy. Most species land in that 13 to 24 inch band each year, which counts as a steady medium pace for a shrub. Burning bush sits at the slow end under 12 inches, so it earns the name slow grower. Wintercreeper blows past 25 inches a year, which is why one plant can swallow a fence in a few seasons.
Match the pace to the job in front of you. Pick the fast type when you need quick coverage on a bank, a fence, or a bare patch you want filled by next year. Wintercreeper will get you there sooner than almost any shrub. Reach for the slow burning bush when you want a tidy specimen that stays put and asks little of you season to season.
Spacing should follow the speed, not the size of the pot you buy. Set wintercreeper plants farther apart than feels right, because they close the gaps fast and crowding only forces more pruning later. With burning bush you can plant closer, since it builds up slowly and you have years before the branches touch.
That vigor is the catch with the fast types, so plan for it from day one. The same energy that fills a slope lets a wintercreeper climb trees and smother native plants once it jumps the bed. Several states list it as invasive, so check your local rules before you plant a large patch of it near woods.
You can keep a fast euonymus in bounds with a little yearly work. Give it a hard edge against lawn or pavement, cut the runners back each spring before they root, and pull any seedlings you spot. Keep it well away from woodland borders where it can escape unseen. If you want the look without the chase, a slower shrub type like burning bush asks far less of you over the long run.
Read the full article: Euonymus Shrub: Care, Types and Honest Guide
