30+ Exotic Black Hollyhock Flower Seed-Nigra Hollyhock- Black Knight-Rare Black Watchman Flower- Alcea Rosa Nigra-B100
Hollyhocks need full sun and moist, rich, well-drained soil. The mistake many novice hollyhock growers make is to plant this flower in soil that is too dry. If you are planting seeds, sow the seeds outside about a week before last frost. If you are planting seedlings out, wait about two to three weeks after last frost. Hollyhock seeds only need to be planted right below the soil, no more than 1/4-inch deep. Hollyhock plants should be about 36" apart to grow well. You can also plant bare root hollyhocks.
Growing hollyhocks (Alcea rosea) in the garden is the goal of many gardeners who remember these impressive flowers from their youth. The flower stalks on hollyhocks can reach heights of 9 feet tall! They can tower above a garden, adding a lovely vertical element to your yard.
How to Plant : Once you have planted your hollyhocks, they will need minimal care, but there are a few things you should be aware of when growing hollyhocks. Here are some tips on hollyhocks. First of all, hollyhocks are a short lived perennial. This means that most varieties will only live two to three years. Their lifespan can be extended some by removing growing hollyhock flowers as soon as they fade. If you live in a non-tropical region, cutting them back to the ground and mulching them will also help. The one benefit that comes from growing hollyhock flowers is that they easily reseed themselves. While they may be short lived, in their proper growing conditions they will continually grow more, which will keep the hollyhock flowers consistent in years to come. Growing hollyhocks also benefit from fertilizer or compost in the spring.
Season: Perennial
USDA Zones: 5 - 9
Height: 36 inches
Bloom Season: Summer
Environment: Full sun to partial shade
Soil Type: Well-drained, pH 5.8 - 7.2
Temperature: 70 - 75F (21-23 c)
Average Germ Time: 14 - 28 days
Light Required: Yes
Depth: Do not cover the seed but press into the soil
Sowing Rate: 2 - 3 seeds per plant
Moisture: Keep seeds moist until germination
Plant Spacing: 36 inches
