Alcea rosea is variously described as a biennial (having a two-year life cycle), as an annual, or as a short-lived perennial.
It frequently self-sows, which may create a perception that the plants are perennial. The plant may flower during its first year when sown early. It will grow in a wide range of soils, and can easily reach a height of about 2,50 m.
The flowers are full, dark red. This variety likes sandy soils, while the lighter colour seems to favour clay soils.
Information source: https://en.wikipedia.org/wiki/Alcea_rosea
Genus - Althaea
Species - Rosea
Common name - Hollyhock
Pre-Treatment - Not-required
Hardiness zones - 3 - 9
Height - 2 - 2,50 m
Spread - 0,50 - 0,70 m
Plant type - Biennial
Exposure - Sun to Partial Shade
Growth rate - Medium
Soil PH - Mildly acidic, Neutral, Mildly alkaline
Soil type - Sandy, poor, well drained
Water requirements - Moist
Landscape uses - Near fences, walls
Bloom season - July - August
Leaf / Flower color - Green / Dark Red
1. Sow the seeds inside from March to May or directly into the ground after the last frost (till teh end of May).
2. Keep the container in a sunny yet cool area. Best temperature for germination - +20C. Germination time - 2-3 weeks.
3. Wait until after the last frost to transplant the seedlings outside.
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