Pinch back the tips of the plants when they are about 8 inches tall to encourage bushier growth.Apply a balanced fertilizer to the plants when they are about 6 inches tall.Once the seedlings emerge, thin them out to give each plant enough space to grow.Water the soil regularly and keep it moist.For spiraea betulifolia tor, first step is to sow the seed in a well-drained soil mix.Related plant: Spiraea Grefsheim Growing Steps betulifolia tor can be propagated by seed, division, or softwood cuttings. It is a relatively low-maintenance plant.betulifolia tor is resistant to many common diseases and pests. It is tolerant of a wide range of soil conditions and is adaptable to both sun and shade.betulifolia tor is often used as an ornamental plant in gardens and landscapes. The flowers are followed by small, brown, bead-like fruits.The flowers are white and borne in clusters of 5-15 blooms.

The leaves are obovate to elliptical in shape and are dark green in color with a toothed margin.Spiraea betulifolia tor is a small deciduous shrub that is native to North America.It is noted for its ovate-lanceolate, toothed, dark green leaves and clusters (corymbs) of pinkish-white flowers that bloom in mid-spring. You’ll get a tight, habit with more, but smaller, flower clusters.Spiraea betulifolia tor is an erect, deciduous shrub that typically grows to 6-9 (less frequently to 12) tall with a similar spread. Use hedge clippers to shear off no more than half of the top growth. If you like a dense, structured look, prune just as new leaves start to show in spring. This technique works with astilbe, bigleaf hydrangea, hosta and Japanese spirea. It won’t matter where you make the cuts, just remove as many flower heads as you can. If you have only a few to cut, scissors or snips are fine. To get more flowers later into summer, snip off the spent heads as they fade. Check out the steps and helpful illustrations below, and you’ll be good to go. I have three easy ways to prune them, as well as the best time of year to do it. You won’t kill a spirea by pruning it! (At the worst, it might not bloom for a year). Sometimes it’s hard to make the cut, but pruning spirea is a pretty worry-free job.

Spirea tor birchleaf pruning