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Helianthus annuus 'Russian Giant' can grow in a neutral to alkaline, well-drained moisture, rich in humus, and moderately fertile soil exposed to full sun. A cane might be needed to support the weight of the bloom.
Helianthus (/ ˌ h iː l i ˈ æ n θ ə s /) [3] is a genus comprising around 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. [ 4 ] [ 5 ] Except for three South American species, the species of Helianthus are native to North America and Central America .
Without the sun, your plants are essentially in the dark. Most indoor hydroponic gardens need full-spectrum LED grow lights, which provide the light wavelengths plants need for photosynthesis ...
A container garden in large plastic planters. Container or bucket gardening involves growing plants in some type of container, whether it be commercially produced or an everyday object such as 5-gallon bucket, wooden crate, plastic storage container, kiddie pool, etc. Container gardening is convenient for those with limited spaces because the containers can be placed anywhere and as single ...
The lanceolate leaves are glossy, simple and alternate and may reach 4 to 12 inches (10–30 cm) long and from 1 to 4 inches (2–10 cm) wide. The leaves have large teeth along the edges (hence the name, sawtooth) to occasionally nearly entire and the tips are pointed. [6]
A branching perennial herb, growing from a stout rhizome and reaches heights from 0.5–3.0 m (1 + 1 ⁄ 2 –10 ft). The rough, slender, tall, erect stems and alternately arranged leaves are covered in rough hairs. [2] The lance-shaped leaves are narrow, rough, pointed, and folded down the midvein, and up to 30 cm (12 in) long on large plants. [2]
Helianthus giganteus is a perennial herbaceous plant native to the northern United States and southern Canada that can grow up to 1–3 metres (3.3–9.8 ft) tall with instances to 4m (13 feet). The leaves are approximately 1 inch wide by 7 inches long, and partly rough.
Helianthus tuberosus is a herbaceous perennial plant growing to 1.5–3 m (4 ft 11 in – 9 ft 10 in) tall with opposite leaves on the lower part of the stem but alternate towards the top. [7] The leaves have a rough, hairy texture. Larger leaves on the lower stem are broad ovoid-acute and can be up to 30 cm (12 in) long. Leaves higher on the ...
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