Skip to main content
A picture of a Cardinal Flower

Cardinal Flower

Lobelia cardinalis

Also known as

Bog Sage, Hog's Physic, Indian Pink, Red Bay, Scarlet Lobelia, Slinkweed, Water Gladiole

Full Sun
Moderate care
Frequent watering
Tender

H6-H2

RHS hardiness

-20°C

Minimum temperature

Expected size

Height
Spread

1m

Max

50cm

50cm

Min

10cm

5 years to reach maturity

Flowering

  • spring
  • summer
  • autumn
  • winter

This plant has no fragrance

More images of Cardinal Flower

A photo of Cardinal Flower
A photo of Cardinal Flower
A photo of Cardinal Flower
A photo of Cardinal Flower

Cardinal Flower Overview

This clump-forming herbaceous perennial can get to 90cm high and has glossy bright green oblong leaves. In summer and autumn it produces spikes of bright scarlet two lipped flowers which get to 5cm in length.

Common problems with Cardinal Flower

How to harvest Cardinal Flower

Generally not harvested.

How to propagate Cardinal Flower

Seed

Cuttings

Basal cuttings

Division

In spring

Special features of Cardinal Flower

Attracts butterflies

Attracts bees

Other uses of Cardinal Flower

Grown for their flowers. Some are suitable for wild gardens or by the waterside. Suitable for coastal conditions.