Beach sunflower (Helianthus debilis)

Beach sunflower

Also known as: Weak sunflower, Dune sunflower

The beach sunflower, Helianthus debilis, or beach sunflower, is a commonly grown sunflower in the Eastern United States. This species of sunflower can tolerate small amounts of salt water, and is often grown on beach dunes to form a thick ground cover for erosion control.

Scientific classification

Species

Beach sunflower (Helianthus debilis)

Asters bellflowers fanflowers and allies

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Perennial, Annual

Lifespan

Herb

Plant Type

All year round

Bloom Time

Summer, Fall

Harvest Time

61 cm to 1.2 m

Plant Height

60 cm to 1.2 m

Spread

Green

Leaf Color

5 cm to 8 cm

Flower Size

Brown

Fruit Color

Yellow

Flower Color

Green

Stem Color

Evergreen

Leaf type

20 - 38 ℃

Ideal Temperature

Spring, Summer

Growth Season

Slow

Growth Rate

Images of Beach sunflower

Attributes of Beach sunflower

Growth Rate

During Spring and Summer, beach sunflower exhibits a slow growth rate, enabling it to gradually develop robust roots and sturdy foliage. This subdued growth pace leads to fewer, but resilient, flowers. Seasonal growth variations typically skew slow, securing beach sunflower's adaptability in coastal environments.

Distribution of Beach sunflower

Distribution Map

Beach sunflower originates from the coastal sand dunes of the southeastern region of North America. This plant has since been introduced to various parts of Europe, Asia, and Africa, as well as to island nations and archipelagos, adapting to a range of climates. In addition to its natural range, beach sunflower is cultivated in gardens and landscapes for its ornamental value.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Meadows, fields

Hemisphere Trend Curve

Northern

Sorthern

Culture

Symbolism

Faithfulness, worship, adoration and loyalty

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Care Guide for Beach sunflower

Every week

Water

Full sun

Sunlight

20 - 38 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Beach sunflower thrives in coastal dunes, preferring well-drained soils and tolerating short dry spells, reflecting its drought resistance. Weekly watering maintains vigor, while natural coastal rains support its growth, minimizing the need for frequent human care.

Fertilize: For beach sunflower, use balanced fertilizers during growth and switch to high phosphorus before blooming. Fertilize every 6-8 weeks; young beach sunflower need light feeds while mature ones require more. Reduce feeding in winter and follow package instructions to prevent root damage. Water thoroughly after fertilizing.

Pruning: Beach sunflower boasts vibrant yellow flowers and thrives with regular pruning. Key techniques involve removing spent blooms and cutting back stems. Optimal pruning is done from early spring to late winter, enhancing air circulation, preventing disease, and promoting new growth for a healthier display.

Propagation: Beach sunflower, part of the Asteraceae family, flourishes in coastal sandy soils. Propagation is best achieved through seed sowing in well-draining, fertile soil with consistent moisture and sun exposure. Seedlings need adequate spacing, regular watering, and occasional fertilization for vibrant flower production.

Repotting: Beach sunflower requires excellent drainage in pots to thrive effectively, ensuring its roots do not become waterlogged.

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