Downy lobelia (Lobelia puberula)

Downy lobelia

Also known as: Purple dewdrop

Downy lobelia originates from the eastern and south-central United States, and it's reportedly the most common blue-flowered species of the Lobelia genus in the southwestern U.S. Its blue-violet flower spikes attract various types of pollinators and give a splash of beautiful color to any garden.

Scientific classification

Species

Downy lobelia (Lobelia puberula)

Asters bellflowers fanflowers and allies

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Herb

Plant Type

Summer, Fall

Bloom Time

1 m

Plant Height

30 cm

Spread

Green

Leaf Color

2.5 cm

Flower Size

Blue, White, Purple

Flower Color

Deciduous

Leaf type

5 - 35 ℃

Ideal Temperature

Images of Downy lobelia

Culture

Symbolism

Malevolence

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Quickly Identify Downy lobelia

Blue tubular flowers with two-lobed upper lip and three-lobed lower lip.

Soft, downy stems and lanceolate leaves up to 4 inches (10 cm) long.

Distinct white center in 0.75 inch (1.9 cm) flowers, blooming from August to October.

Leaves are alternate, green, 1-2 inches (2.5-5 cm) long, with toothed edges.

Prominent veins and hairy texture on underside aid in downy lobelia identification.

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Care Guide for Downy lobelia

Every week

Water

Full sun

Sunlight

5 - 35 ℃

Ideal Temperature

Water: Downy lobelia prefers consistent moisture and thrives in humid environments. Water weekly for optimal hydration. It is moderately drought-tolerant but grows best during the rainy season when water is abundant. Typically, it is grown outdoors to maintain environmental humidity.

Fertilize: Downy lobelia benefits from balanced nutrition fertilizers applied monthly during the growing season. Use half-strength to prevent over-fertilization. Adjust application frequency during dormant periods and apply at the plant's base for optimal nutrient uptake, ensuring adherence to instructions for downy lobelia's health.

Pruning: Downy lobelia features vibrant blue or purple flowers and downy leaves. Prune in early spring to enhance growth and blooms, and deadhead to extend flowering. Cut back stems in fall for winter preparation. Regular pruning maintains size and health, ensuring a tidy garden appearance.

Propagation: Propagate downy lobelia by sowing small seeds on moist, well-drained soil. Light is essential for germination, so press seeds gently into the surface. Maintain consistent moisture without waterlogging. Monitor patiently during germination, and transplant established seedlings to their final location with sufficient space for growth.

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Images of Downy lobelia

Culture

Quickly Identify Downy lobelia

Care Guide for Downy lobelia

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