Black Bluebell (Eranthemum nigrum)

Binomial name

Eranthemum nigrum

Common names

Black Bluebell, Blue Eranthemum

Description

Eranthemum nigrum is a striking tropical shrub that stands out for its dark green leaves and beautiful clusters of blue or purple tubular flowers. The vibrant blooms are not only eye-catching but also attract pollinators like bees and butterflies, making it a great choice for a wildlife-friendly garden. This plant grows well in tropical and subtropical climates, often used in borders or as a container plant. With its relatively low-maintenance care requirements and lovely flowers, it’s a great addition to any garden or home.

Light requirements

Eranthemum nigrum thrives in bright, indirect light, but it can also tolerate some direct sunlight. It blooms best when exposed to full sun or partial shade, making it perfect for a spot that receives filtered light.

Soil preferences, including pH and drainage

This plant prefers well-draining, slightly acidic to neutral soil (pH 6.0–7.0). A good mix of potting soil with some added sand or perlite will ensure proper drainage. Well-drained soil helps avoid root rot, which can be a concern if the plant is overwatered.

Water needs

Eranthemum nigrum enjoys regular watering but dislikes being waterlogged. Water deeply when the soil surface feels dry, allowing excess water to drain away. During the cooler months, reduce watering slightly as the plant’s growth slows down.