Philadelphus lewisii is a medium-sized deciduous shrub grown for its late-spring to early-summer display of fragrant white flowers. It is native to seasonally moist valleys and slopes from southwestern Canada to the northwestern United States.
This fast-growing shrub has oval, smooth to weakly toothed, medium to dark green leaves and upright to arching, gray-brown stems. The four-petaled, citrus-scented blooms are borne in terminal and axillary clusters on the previous year's growth. They are followed by inconspicuous brown capsules containing numerous tiny seeds. Plants may self-sow.
Grow wild mockorange in full sun or light shade in moist, well-drained, acidic to mildly alkaline soil. Established plants tolerate drought. Of relatively brief seasonal interest, this shrub works best in naturalistic plantings or mixed borders. Prune old branches back to strong new growth immediately after bloom. (info source: learn2grow.com)
Genus - Philadelphus
Species - Lewisii
Common name - Wild Mock Orange
Pre-Treatment - Required
Plant type - Shrub
Vegetation type - Deciduous
Hardiness zones - 5 - 8
Exposure - Full Sun, Partial Sun
Height - 4'-10' / 1.20 - 3 m
Spread - 6'-10' / 1.80 - 3 m
Growth rate - Fast
Bloom season - Spring, early summer
Leaf / Flower color - Green / White
Soil PH - Acidic, Neutral, Alkaline
Soil type - Loam, Well Drained
Water requirements - Average Water
Landscape uses - Foundation, Mixed Border, Topiary / Bonsai / Espalier
Extremely fine seed.
1. Cold-stratify the mock orange seeds for 30 days in the refrigerator. A simple method for doing this is adding these tiny seeds on the wet kitchen towel in a plastic bag.
2. Sow on the surface of teh prepared sowing mix. Tamp. Cover with clear plastic or glass.
3. Keep very warm (~-24-25C) and in bright position.
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