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Alcea rosea nigra (Black Hollyhock) seeds - RP Seeds

Alcea rosea nigra (Black Hollyhock) seeds


Unusual, striking hardy perennial with very dark maroon, almost black, single flowers in summer. Flowers the first year from seed from an early sowing. Fully hardy and produces more and more flowers year after year.

Hardy Perennial
Flowers: Summer
Height: 125-150cm
Position: Sun

Packet of 30 seeds


RHS Plants for Pollinators. 

The RHS Plants for Pollinators mark is only given to plants that support pollinating insects. Find out more at rhs.org.uk/plantsforpollinators



Sowing Instructions: Sow at any time of year except early to mid summer (too much heat while the seedlings are growing can result in spindly plants). Sowing in late summer produces larger plants and is recommended if your soil is heavy or badly drained.

Sow onto the surface of a moist, free-draining seed compost in pots or trays and cover with a very fine sprinkling of sieved compost or vermiculite. Seal in a polythene bag or place in a propagator and maintain at 15-20C. Germination usually takes 14 to 21 days.

Growing Instructions: When seedlings are large enough to handle, pot up individually into 8cm pots and grow on in cooler conditions, preferably 10-15C. Maintain plants in pots and over winter in a well-ventilated, cool frost-free place as necessary. Gradually acclimatise plants to outdoor conditions before planting out in the garden in a sunny position.

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