When to sow Helenium?
Sow and Plant Set out plants after the soil begins to warm in spring. Container-grown plants are often sold in summer, just when they begin to bloom, and are easily transplanted provided they are kept constantly moist. Helenium needs more water than other wildflowers and does not do well with drought. Overwintering. Helenium is a hardy perennial but to help it get through the winter, it helps to spread a 6-inch layer of hay or mulch over your helenium bed. In the spring, as soon as the frost danger has passed, remove the insulating layer.Helenium is a genus of annuals and herbaceous perennials having yellow or orange-to-red daisy-like flowers. The genus is named after Helen of Troy. Potential problems: powdery mildew, leaf spot, and rust. In high wind or heavy rain, the stalks may need support.
Do helenium seeds need cold stratification?
Seed: Will benefit from some cold, moist stratification. Sow outdoors November through February or stratify 2 to 6 weeks. In the very early Spring (end of January to March) you can sow hardy annual seeds. These are seeds that will produce plants that are tolerant of frost – they’ll put on strong deep roots all winter long and produce flowers from June until the first frosts (where I live in Surrey that happens in early November).Planting your seeds in the fall can give you a head start on your annual beds. As they will bloom sooner than if you were to plant your seeds in the spring.
Where is the best place to plant Helenium?
Heleniums thrive in most soil types, and prefer full sun. It is best to support them by staking around the clump in spring. Helenium does best in full sun. Helenium does best in full sun in rich, moist soil, although many of the hybrids are more tolerant of relatively drier soil. Plants require watering during dry periods and may benefit from fertilization in early spring when growth resumes.