Blue Lobelia

Blue Lobelia Care

Lobelia Siphilitica

What is the plant

Lobelia Siphilitica is a species of flowering plants in the Campanulaceae family.Originating from North America, this dicotyledonous plant is known for its unique and fancy, bright blue blooms.With an upright growth pattern, this distinctive plant is perfect for adding vertical interest to the landscape in a graceful manner.Lobelia siphilitica is a herbaceous perennial, growing between 2′ – 4’ feet tall on average and spreading up to 2’ feet across.It features an unbranched, sparsely hairy erect central stem bearing lively green foliage.

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Humidity

Normal

Lighting

Part Sun

Temperature

min -4°C

Hardiness zone

4 - 9

Difficulty

Medium

Hibernation

Cold Period

Toxicity

Poisonous

How to Care for the Plant

Water
Lobelia siphilitica has intense watering needs especially if planted in dry soils or regions with low humidity.Water it regularly every week, increasing the frequency and amount during dry spells in order to maintain soil moisture.
Pruning
Deadheading may be required to give the plant a neat look and ensure healthy growth during bloom time.
Fertilizer
Blue lobelia grows as a wildflower and doesn't usually require fertilizer, preferring organic nutrients from compost.

Disease diagnosis

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Sunlight
It requires full sun but performs equally well if planted under part shade.
Soil
Lobelia siphilitica prefers highly moist soil.In its native regions, it is a freely-growing and often dominant plant in meadows, swamps and other similar places with boggy soil type.
Temperature
Lobelia siphilitica is suitable for growth in USDA hardiness zones 4 through 9.