Helianthus Salicifolius
Willowleaf sunflower
Helianthus salicifolius is a perennial which grows to 2.5m. tall, spreading by means of underground rhizomes. Leaves are long and very very narrow, up to 20cm long. Each plant usually produces 6-15 flower heads, each containing 10-20 yellow ray florets surrounding 50 or more red disc florets. Prefers average, well-drained soils. Grows best with added moisture but can tolerate drought. Allow seed heads to remain for winter food for birds and divide clumps in spring or autumn every 3 to 4 years.
Contributed by @twin-dragons
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Full sun
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Occasional watering
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A little frost hardy: 32F (0°C)
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Moist and free draining
Common name
Willowleaf sunflower
Latin name
Helianthus Salicifolius
type
Flowering plant
family
Asteraceae
ph
5.0 - 7.0 Acid - Neutral
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Light
Full sun
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Frost
A little frost hardy: 32F (0°C)
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Soil
Moist and free draining
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Water
Occasional watering
Plant & bloom calendar
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Best time to plant
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When the plant will bloom
full grown dimensions
0.90 M
2.50 M
Helianthus Salicifolius
Helianthus salicifolius is a perennial which grows to 2.5m. tall, spreading by means of underground rhizomes. Leaves are long and very very narrow, up to 20cm long. Each plant usually produces 6-15 flower heads, each containing 10-20 yellow ray florets surrounding 50 or more red disc florets. Prefers average, well-drained soils. Grows best with added moisture but can tolerate drought. Allow seed heads to remain for winter food for birds and divide clumps in spring or autumn every 3 to 4 years.
Propagation by seed outdoors
From Mid Winter TO Early Spring
Once the frosts have passed it is time to plant sunflowers into the garden. If planting straight into the soil, look for a sunny position with shelter from winds. A position against a wall is usually best. Try to avoid sandy soil and rich-free draining soil will be most successful. Plant the seeds about 30cm apart and about 3cm below the surface. Sunflowers do like a lot of water so to get the best out of your plant try to water it every day, but keep and eye on the soil and roots as constantly damp and soggy roots will make the plant unstable and good lead to root rot.
Planting young plants
From Early Spring TO Early Spring
Plant pot grown plants or rhizomes in early spring, in moderately fertile, moist but well-drained, alkaline to neutral soil in full sun. These are tall plants with week stems prone to wind damage so may need support from canes or planting against a trellis.
Planting Outdoors Spring
From Early Spring TO Mid Spring
Once the frosts have passed it is time to plant sunflowers into the garden. If planting straight into the soil, look for a sunny position with shelter from winds. A position against a wall is usually best. Try to avoid sandy soil and rich-free draining soil will be most successful. Plant the seeds about 30cm apart and about 3cm below the surface. Sunflowers do like a lot of water so to get the best out of your plant try to water it every day, but keep and eye on the soil and roots as constantly damp and soggy roots will make the plant unstable and could lead to root rot.
Flowering season
From Early Summer TO Early Autumn
Sunflowers flower throughout the hottest part of the summer. Their flower heads famously follow the sun throughout the day and hang down over night! A stunning site throughout many regions of mid and southern France and Italy where they are farmed for the oil. Very bee friendly.
twin-dragons
NekoKatita