Cassia hebecarpa ( Senna hebecarpa ) is a perennial shrub native to Quebec, reaching up to 1.5 meters in height. It is distinguished by its bright green foliage composed of pinnate leaves, bringing interesting texture to landscaping. In summer, it produces clusters of bright yellow flowers that contrast nicely with the lush foliage. These flowers attract a wide variety of pollinators.
2. Sowing
Difficulty level : Medium
Type of sowing : Indoors or direct sowing in autumn
Sowing technique : The seeds require scarification followed by 15 days of cold stratification. To scarify, gently rub the seeds between two sheets of fine sandpaper to slightly damage the seed coat. Then, mix the seeds with a moist substrate (vermiculite, perlite, or sand) and place them in a plastic bag in the refrigerator for 15 days. Then sow to a depth of 5 mm.
Sowing depth : 5 mm
Germination days : 7 to 20 days
Germination temperature : Not specified
3. Culture
Ease of cultivation : Average
Growing season : Spring to fall
Transplanting : After all risk of frost
Plant spacing : 60 cm
Hardiness Zone : 4
Light : Full sun to partial shade
Soil type : Loamy to clayey, well drained
Soil pH : Not specified
Soil moisture : Average
Soil fertility : Not very demanding
Time to flowering : Not specified
Watering : Regular, especially during dry periods
Other Features : Deer resistant, attracts pollinators, ideal for naturalistic gardens
4. Use
Perfect for naturalistic gardens in Quebec, the hairy cassia adds an ornamental touch with its bright yellow flowers and attractive foliage. It also contributes to biodiversity by attracting various pollinators.
5. Companionship
Friendly plants : Asters, rudbeckias, echinaceas
Enemy plants : None known
This native species is well adapted to Quebec’s climates and is an excellent choice for gardeners wishing to enrich their space with an ornamental plant beneficial to the local ecosystem.
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