Swamp Sunflower
identification
description
Helenium autumnale , seeds by Marie-Victorin
Helenium autumnale is a hardy, bright perennial that is ideal for bringing a burst of colour to the garden in late summer and autumn. Its bright yellow flowers, with distinctive three-pointed petals, attract many pollinators and create a magnificent floral display. Ideal for heavy, clayey soils, this hardy plant blends harmoniously into flower beds or natural gardens, while extending the flowering season.
Spread : 0.5 to 1 meter
Plant height : 0.8 to 1.5 meters
Quantity per pack : over 1000 seeds
Companion plants : rudbeckia, asters, echinacea
Enemy plants : none known
Hardiness zone : 3
Exposure : sun, partial shade
Moisture : Fresh, heavy, well-drained soil
Sowing Instructions : Mix seeds with an equal volume of moist sand or vermiculite. Place in a sealed plastic bag and refrigerate for 30 to 90 days (cold stratification). Then sow directly on the surface in the desired location as soon as the temperature becomes suitable. Seeds require light to germinate; do not cover with soil. Mixing seeds with sand or talcum powder can help ensure uniform sowing.
Helenium is a vigorous and easy-to-grow perennial, perfect for extending the beauty of the garden until the end of the season. Its warm glow and ability to attract pollinators make it a must-have plant for gardeners passionate about biodiversity and vibrant colors.
