Whole plant
Overall shape, height, branching and growth habit.
Flowers
Lobelia growing guide
A compact flowering annual or tender perennial with masses of small blue, purple, pink or white flowers. It performs best with moderate temperatures and reliable moisture.
☠ Poisonous — All parts
Contains lobeline and related alkaloids. Harmful if eaten.
Risk to: People · Pets
14-21 daysGermination
VariesHarvest
15 cmSpacing
0.1 cmSow depth
Full/PartSun
TenderFrost
2.5 cm/weekWater
5.5-6.5pH
Planting calendar by climate
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Botanical reference
Compare the whole plant first, then check the leaf, flower and harvest detail to identify what Lobelia should look like as it grows.
Leaf detail
Leaf shape, edges, colour and vein pattern.
Flower detail
Flower colour, structure and where blooms appear.
Harvest / detail
Fruit, root, seed, pod or the strongest identifying feature.
Good companions
No companion data yet.
Avoid near
No avoid list yet.
Growing note
Surface-sow the very fine seed. In hot climates give afternoon shade and trim tired plants to encourage fresh growth.
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