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The dainty, white flowers of Mountain Silverbell are a lovely sight to behold in springtime. This multi or single-trunked deciduous tree is native to the central and eastern United States where it inhabits woodland areas with rich, fertile soils. There are two varieties that vary in height. Halesia tetraptera var. tetraptera becomes a small to medium sized tree and Halesia tetraptera var. monticola becomes very large. Mature specimens develop large, rounded crowns.
As the first of its yellow-green leaves begin to emerge in spring, clusters of two to six pendent, white, bell-shaped blossoms line the branches. These are frequented by bees and mature to four-keeled, yellow-green fruits that dry to tan in autumn. The fall foliage turns a rather unspectacular mottled blend of yellow and green early in the season. Its grayish brown bark is shallowly furrowed and offers limited winter interest.
This spring bloomer looks pretty with azaleas and woodland flowers planted at its base. Its delicate white blooms are especially appealing when viewed from beneath the branches, so consider planting it near a park bench where people can gaze up at them.
Information source: Learn2Grow.com
Genus - Halesia
Species - Tetraptera
Common name - Mountain Silverbell
Pre-Treatment - Required
Hardiness zones - 5 - 8
Height - 7 - 12 m
Spread - 6 - 10 m
Plant type - Medium Tree
Vegetation type - Deciduous
Exposure - Full Sun, Partial Sun, Partial Shade
Growth rate - Medium
Soil PH - Acidic, Neutral
Soil type - Clay, loam, fertile, well drained
Water requirements - Average Water
Landscape uses - Feature Plant, Mixed Border, Shade Trees
Germination rate - 70%
Bloom season - Spring
Leaf / Flower color - Green, yellow green / White
| Useful Info | |
| Germination | 1. Place the Carolina silverbells seed pods in a vacuum flask and fill it with hot water. Screw the lid on the flask. Soak the seeds for 24 hours before sowing them to soften the tough outer hull and prompt faster germination. Cold / moist stratify for 60 days in a fridge or outside as described below: 2. Prepare the planting pots as the seed pods soak. Fill several 2-gallon plastic pots with a mixture of 2 parts potting soil, 2 parts compost, 1 part coarse sand and 1 part perlite. Water the pots of soil to a depth of 5 inches and allow the soil mixture to drain for 30 minutes. 3. Scratch a depression in the center of each pot of soil 1 inch deep. Place the whole seed pod into the hole so it is lying on its side, and bury it in compost. 4. Spread a 1-inch-thick layer of shredded pine mulch over the top of each pot. Place the pots in a ventilated cold frame for the winter. Water the pots to a depth of 5 inches once a week. 5. Remove the pots from the cold frame in spring and place them somewhere with partial shade and protection from the wind. Continue to water to a depth of 5 inches once a week. 6. Leave the pots outdoors for their second winter. Check for signs of germination in the spring. Keep the saplings in their nursery pots for one year after they sprout to allow them to establish a productive root system. 7. Plant them out in early spring of their third year. Choose a permanent planting site with rich, acidic soil and partial shade during the hottest part of the day. |
