0How it thrives
Waterhigh
Lightfull sun
Humiditymedium
Min. temperature5 °CJanuary
Don’t water – dry winter rest. Slight shrivelling is normal.
No feeding now.
Cool and bright, 5–12 °C: unheated room, stairwell, cold windowsill or frost-free greenhouse.
February
Don’t water – dry winter rest. Slight shrivelling is normal.
No feeding now.
Cool and bright, 5–12 °C: unheated room, stairwell, cold windowsill or frost-free greenhouse.
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.
The sunniest window (south or west).
Move it somewhere brighter and warmer and end wintering. Get it used to strong sun gradually.
If roots fill the pot: fresh soil, a pot 1–2 cm larger. Water sparingly for a week afterwards.
April
Keep evenly moist but never waterlogged.
Liquid feed every 2–3 weeks.
The sunniest window (south or west).
If roots fill the pot: fresh soil, a pot 1–2 cm larger. Water sparingly for a week afterwards.
May
Keep evenly moist but never waterlogged.
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.
June
Keep evenly moist but never waterlogged – 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 flowers next month – once you see buds, don’t move it any more.
Above 35 °C, shade it at midday to prevent sunburn.
July
Keep evenly moist but never waterlogged – 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
Keep evenly moist but never waterlogged – 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
Keep evenly moist but never waterlogged.
No feeding now.
Best outdoors: sunny balcony, terrace or garden – acclimatise it to full sun gradually.
Bring it in when nights drop below 10 °C. Check for pests first.
It usually flowers now – don’t turn or move it, and log the bloom in your diary!
October
Taper off gradually: very little by the end of the month.
No feeding now.
The sunniest window (south or west).
Move it to its cool, bright winter spot and taper off watering. Log it with one click in the Care hub.
It usually flowers now – don’t turn or move it, and log the bloom in your diary!
November · now
Don’t water – dry winter rest. Slight shrivelling is normal.
No feeding now.
Cool and bright, 5–12 °C: unheated room, stairwell, cold windowsill or frost-free greenhouse.
December
Don’t water – dry winter rest. Slight shrivelling is normal.
No feeding now.
Cool and bright, 5–12 °C: unheated room, stairwell, cold windowsill or frost-free greenhouse.
Lift the rhizomes after the first frost and store them dry at 5–10 °C.
Not a true lily despite the name.
Canna iridiflora – what to know
Canna iridiflora belongs to the Cannaceae family (genus Canna) and is listed in our catalog under “Garden flower”. Its needs – light: full sun; water: high; humidity: medium. Keep it above 5 °C – it is frost-tender and needs a frost-free spot in winter. Rest period: dry winter rest. Typical flowering time: July, August, September, October. Easy enough for beginners. It is not known to be toxic to cats or dogs. Nobody on Perfect Plants Club has added it to their collection yet – be the first!
Frequently asked questions
How often should I water Canna iridiflora?
Generously: keep the soil evenly moist and never let it dry out completely.
How much light does Canna iridiflora need?
It needs plenty of direct sun – the sunniest window, or outdoors in summer, suits it best.
How cold can Canna iridiflora get?
Keep it above 5 °C – it is frost-tender and needs a frost-free spot in winter.
Is Canna iridiflora toxic to cats and dogs?
It is not known to be toxic to cats or dogs.
When does Canna iridiflora flower?
Typical flowering time: July, August, September, October.
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.
Tips and questions about this species
Canna
Care data is for guidance only.
Log in to comment.