0Geranium macrorrhizum
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Tips & experience from members
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How members water it
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How it thrives
Watermedium
Lightbright indirect
Humiditymedium
Min. temperature-30 °CJanuary
Only very rarely, a little water so the roots don’t dry out completely.
No feeding now.
It can stay outside. Wrap the pot (hessian, polystyrene) and keep it against the house wall, out of the rain.
February
Only very rarely, a little water so the roots don’t dry out completely.
No feeding now.
It can stay outside. Wrap the pot (hessian, polystyrene) and keep it against the house wall, out of the rain.
March
Gentle start: the first small drink once you see buds or new growth and it warms up.
First weak dose at the end of the month if it is actively growing.
Bright spot, east or west window.
Move it somewhere brighter and warmer and end wintering. Get it used to strong sun gradually.
April
When the top 2–3 cm of soil are dry.
Liquid feed every 2–3 weeks.
Bright spot, east or west window.
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.
Semi-shaded balcony or east/west window – protect from harsh midday sun.
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.
Semi-shaded balcony or east/west window – protect from harsh midday sun.
It usually flowers now – don’t turn or move it, and log the bloom in your diary!
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.
Semi-shaded balcony or east/west window – protect from harsh midday sun.
It usually flowers now – don’t turn or move it, and log the bloom in your diary!
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.
Semi-shaded balcony or east/west window – protect from harsh midday sun.
It usually flowers now – don’t turn or move it, and log the bloom in your diary!
September
When the top 2–3 cm of soil are dry.
No feeding now.
Semi-shaded balcony or east/west window – protect from harsh midday sun.
October
Taper off gradually: very little by the end of the month.
No feeding now.
Bright spot, east or west window.
Move it to its cool, bright winter spot and taper off watering. Log it with one click in the Care hub.
November · now
Only very rarely, a little water so the roots don’t dry out completely.
No feeding now.
It can stay outside. Wrap the pot (hessian, polystyrene) and keep it against the house wall, out of the rain.
December
Only very rarely, a little water so the roots don’t dry out completely.
No feeding now.
It can stay outside. Wrap the pot (hessian, polystyrene) and keep it against the house wall, out of the rain.
Geranium tip: Shear it to the ground after the first flush for fresh foliage and often a second bloom.
The balcony “geranium” is actually Pelargonium – mildly toxic.
Bigroot geranium – what to know
Bigroot geranium (Geranium macrorrhizum) – family: Geraniaceae, genus: Geranium. Care guidelines: light: bright indirect; water: medium; min. -30 °C. There is no reliable data on its effect on cats and dogs.
All Geranium species in the catalog →Detailed toxicity data →
Frequently asked questions
How often should I water Bigroot geranium?
Moderately: water when the top 2–3 cm of soil is dry, and never let it sit in standing water.
How much light does Bigroot geranium need?
It likes bright but indirect light, such as near an east- or west-facing window.
How cold can Bigroot geranium get?
Frost-hardy to about -30 °C – it can overwinter outdoors in many climates.
Is Bigroot geranium toxic to cats and dogs?
There is no reliable data on its effect on cats and dogs.
When does Bigroot geranium flower?
According to the general guideline for the genus Geranium: Typical flowering time: May, June, July, August.
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
Geranium
Care data is for guidance only.
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