An interesting and unusual perennial.
Family: Apiaceae, Umbelliferae.
Origin: south-central USA.
Distinguishing Features: An annual species with exotic purple flowers, red-violet bracts and blue-gray foliage.
Flowering plant height: 60 cm.
Distance between plants: 60 cm.
Period of natural flowering: VII-IX.
Winter hardiness zones: Z4-8.
Soil Requirements: Well-drained soil, pH 6.5-7.5.
Location: sunny and semi-shady.
Use: Combine with other drought tolerant prairie plants - Gaillardia Amber Wheels, Andropogon Prairie Blues and Mirabilis multiflora.
Distinguishing Features: Stunning cut flower.
1.0 g = 480 seeds.
Seeding rate: 2-3 seeds per cell.
Sowing should be kept warm (approximately +18 to +22°C) and moist for the first 2-4 weeks. After this period, sowing must be kept at a cold temperature (from -4 to + 4 ° C) for another 4-6 weeks. It is not so important whether the temperature is higher or lower during the cooling period, but the cooling period must be extended, since the synthesis of the germination inducer hormone-like acid slows down or stops. During the cold season, it is useful to cover the sowing with snow. The temperature below it is usually kept in the optimal range from -4 to 0°C. Sowing is kept moist, and melted snow contributes to the destruction of the shell, which is beneficial for germinating seedlings. After this cooling period, the crop should not be immediately exposed to high temperatures. The most effective temperature is from +5 to +12°C, even if germination has already begun. The best place for this sowing, even in March, April and May, is open ground, a cold greenhouse or a cold greenhouse.
The best sowing dates: November - March.
From seed to germination: 8-10 weeks (or a second wet/cold stratification may be required).
From germination to transplant: 4-6 weeks.
Leavenworth eryngo, Levenworth eryngo, Levenworth eryngo. Bot.: Eryngium leavenworthii.