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Plant these as a winter sowing or cold stratify them for spring planting. Swamp sunflower (H. angustifolius) . As its name suggests, swamp sunflower tolerates wetter sites than other sunflowers.
The seeds need 8–10 days of germination time. T. porrifolius is a biennial plant. In the first year only the vegetative parts of the plant are developed. In autumn, the energy is stored in the root system, which is depending on the variety more or less branched. In the second season the generative purple flowers evolve. [17]
Most of the leaves are close to the base of the stem. One plant can produce 1-15 flower heads, each with 10-15 yellow ray florets surrounding 75 or more red or purple disc florets. The plant grows in mixed woods and along roadsides. [3]
Perennial sunflower is a crop of sunflowers that are developed by crossing wild perennial and domestic annual sunflower species. Annual sunflower is a major oilseed crop. Genes from wild perennial relatives may increase root depth and mass and extend the growing season. These upgrades means future varieties with higher yields and better soil ...
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123rf. Beets are a nutrient-dense root vegetable with a striking purple hue. They’re an excellent source of folate, vital for cell growth and DNA repair. Beets are known to improve blood flow ...
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