Lobelia – Pink – Guide & Ordering

Pink lobelia fills baskets with tiny rose or blush flowers. Here is how it grows, when to plant it in each part of Australia and what to do if it starts to look tired.

A soft pink for edges and baskets

Pink forms of Lobelia erinus range from pale blush to a warmer rose, nearly always with a white or pale centre. The plant stays small, usually under 25 cm, and spreads into a loose mat or tumbles over the side of a hanging basket. Cultivars on record include 'Riviera Rose', which gives an idea of the rose tones breeders were aiming for.

When and where to plant

Lobelia is happiest in cool conditions. Southern and highland gardeners can plant in spring; those in Sydney, Perth and Adelaide often plant in autumn to get winter and spring flowers. In Brisbane, Cairns or Darwin it is a dry-season plant only.

Everyday care for pink lobelia

1. Plant in rich, free-draining potting mix with room for roots. 2. Put it in morning sun and shade from the hottest afternoon rays. 3. Water often. Small containers can dry out in a single windy day. 4. Feed every second week with a liquid fertiliser. 5. Shear back by half when flowering slows, then feed again.

What a pink lobelia stands for

Pink is traditionally linked with affection, gratitude and gentle joy, which is why potted lobelia suits a thank-you gift or Mother's Day in May, when the weather is cooling and plants set out in autumn are starting to bloom.

Keeping pets safe around pink lobelia

Lobeline, a toxin in Lobelia cardinalis, is why the ASPCA warns about that species for dogs, cats and horses. Keep chewing pets away from all lobelias.

Quick facts – Lobelia – Pink

Colour
pink
Latin name
Lobelia erinus
Type
summer flower
Light
full sun to partial shade
Water
moderate
Height
10-25 cm
Scent
none
Toxic to Pets
yes
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FAQ about Lobelia – Pink

Is pink lobelia suitable for a hanging basket?
Yes. Trailing forms are made for baskets and window boxes, where the flowers tumble over the edge.
When should I plant it?
Spring in cool districts, autumn in warmer coastal cities, and the cooler dry months in the tropical north.
Why has my lobelia stopped flowering?
Heat and dryness are the usual causes. Trim it back by half, water well and give it a feed.
Can pink lobelia grow in the shade?
It copes with partial shade, but flowers best with morning sun.

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