Lobelia – 3
Lobelia
Genus – the data refers to the whole genus Lobelia, not to a single species.
- Taxonomy
- Family: Campanulaceae · Genus: Lobelia
Still missing: plant type, native distribution, natural habitat, height / growth form, flowering period, growth & dormancy period.
Tips & experience from members
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How members water it
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How it thrives
Watermedium
Lightfull sun
Humiditymedium
Min. temperature0 °CJanuary
Nothing to do now – plan spring sowing and order seeds.
February
Nothing to do now – plan spring sowing and order seeds.
March
Sow indoors on a bright windowsill; plant out after the last frosts (mid-May).
When the top 2–3 cm of soil are dry.
First weak dose at the end of the month if it is actively growing.
The sunniest window (south or west).
April
Sow indoors on a bright windowsill; plant out after the last frosts (mid-May).
When the top 2–3 cm of soil are dry.
Liquid feed every 2–3 weeks.
The sunniest window (south or west).
It flowers next month – once you see buds, don’t move it any more.
May
When the top 2–3 cm of soil are dry.
Liquid feed every 2–3 weeks.
Best outdoors: sunny balcony, terrace or garden – acclimatise it to full sun gradually.
After mid-May (last frosts) it can go outside – keep it in partial shade for the first 1–2 weeks to avoid sunburn.
It usually flowers now – don’t turn or move it, and log the bloom in your diary!
June
When the top 2–3 cm of soil are dry – more often in heatwaves, preferably in the evening.
Liquid feed every 2–3 weeks.
Best outdoors: sunny balcony, terrace or garden – acclimatise it to full sun gradually.
It usually flowers now – don’t turn or move it, and log the bloom in your diary!
Above 35 °C, shade it at midday to prevent sunburn.
July
When the top 2–3 cm of soil are dry – more often in heatwaves, preferably in the evening.
Liquid feed every 2–3 weeks.
Best outdoors: sunny balcony, terrace or garden – acclimatise it to full sun gradually.
It usually flowers now – don’t turn or move it, and log the bloom in your diary!
Above 35 °C, shade it at midday to prevent sunburn.
August
When the top 2–3 cm of soil are dry – more often in heatwaves, preferably in the evening.
Liquid feed every 2–3 weeks.
Best outdoors: sunny balcony, terrace or garden – acclimatise it to full sun gradually.
It usually flowers now – don’t turn or move it, and log the bloom in your diary!
Above 35 °C, shade it at midday to prevent sunburn.
September
When the top 2–3 cm of soil are dry.
Liquid feed every 2–3 weeks.
Best outdoors: sunny balcony, terrace or garden – acclimatise it to full sun gradually.
Bring it in when nights drop below 5 °C. Check for pests first.
It usually flowers now – don’t turn or move it, and log the bloom in your diary!
October
It ends with the first frosts – collect seeds for next year.
When the top 2–3 cm of soil are dry.
No feeding now.
The sunniest window (south or west).
November · now
Nothing to do now – plan spring sowing and order seeds.
December
Nothing to do now – plan spring sowing and order seeds.
Cut it back by half in midsummer and feed – it will flower again until frost.
Lobelia – what to know
Lobelia: a plant genus (Campanulaceae). Care guidelines: light: full sun; water: medium; min. 0 °C. For cats: mildly toxic; for dogs: mildly toxic. Keep it out of reach and call a vet straight away if you suspect poisoning.
Frequently asked questions
How often should I water Lobelia?
Moderately: water when the top 2–3 cm of soil is dry, and never let it sit in standing water.
How much light does Lobelia need?
It needs plenty of direct sun – the sunniest window, or outdoors in summer, suits it best.
How cold can Lobelia get?
It tolerates brief, light frost (down to about 0 °C) but needs winter protection.
Is Lobelia toxic to cats and dogs?
For cats: mildly toxic; for dogs: mildly toxic. Keep it out of reach and call a vet straight away if you suspect poisoning.
When does Lobelia flower?
Typical flowering time: May, June, July, August, September.
What members’ data shows
When does it really bloom?
No blooms logged yet. If yours flowers, your data will be the first!
Average watering interval
Not enough watering logs yet. Waterings logged in the care hub feed this chart.
Questions about this species
Care data is for guidance only.
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