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Shrub Rose Cardinal de Richelieu
This shrub is one of the oldest rosebushes, dating back to before 1847. Shrub rose Cardinal de Richelieu tolerates poorer soil than most roses, and is a tough, hardy rose.
A beautiful, summer-flowering Gallica rose, Rosa Cardinal de Richelieu is a medium-sized, deciduous shrub rose with a compact, bushy habit and slender, almost thornless stems. The lush, divided leaves are mid-green. In midsummer, the shrub bears a profusion of gorgeous, almost globular, fully double, deep purple flowers which open out to a dusty purple with a pale centre and green eye; they have a deep, distinctive scent. Its fragrance is long-lasting, which is why it is widely used in cosmetics and in mixtures of dried flowers for potpourri.
Site: Tolerates exposure
Soil: Any moisture-retentive, humus-rich, well-drained soil
Position: Full sun
Season of interest: Midsummer
Hardiness: Very hardy
Height: up to 5’ (1.5m)
Spread: 4’ (1.2m) in 2-5 years; sometimes smaller
Fragrance: Good old fashioned fragrance
Disease Resistance: Good disease resistance.
Flowering Season: Single Flowering in May - June each year
Starting the rose seeds
Before growing the roses from seed, the seeds have to undergo a period of stratification. This is a cold moist storage that gets the seeds ready for germination.
Cold Treatment
Chilling your seeds in a refrigerator for about six to ten weeks encourages them to germinate faster once planted. Place your seeds on a paper towel before moistening them. Use half purified water and half peroxide to prevent the growth of mould. You can then place them in a plastic zippered bag, mark the date and variety before placing in a refrigerator set at 1 to 3 degrees C. The paper towel should remain moist for the entire period.
Planting your seeds
When you think your seeds are ready for planting (6-10 weeks), remove the bag from the refrigerator if that was your stratification method. You will need shallow trays or small pots to plant your seeds. The ideal size of the trays or pots should be 3-4 inches deep.
Next fill your trays or pots with the potting soil. You can opt to use 50% sterile potting soil and 50% vermiculite, or half peat and half perlite. When the potting mix is ready in the trays or pots, this is the time to take off your seeds from the towel.
Place your seeds about ¼ inch into the soil and dust the surface again to prevent the damp off disease that kills seeds. Water them properly and place them outside in direct sunlight. If there is frost, it is advised you place your seeds under a tree or in a sheltered part of the patio to protect them.
Keep the soil pots or trays watered but not soggy. Do not let them dry up as this might affect the germination of your seeds.
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