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Poinsettia care by season

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Euphorbia pulcherrima 'Gutbier V-14 Pink'
Photo: Jardin botanique de Montréal (Gilles Murray)
Time of year Winter
(mid-November to late April)
Spring
(late April to mid-June)
Summer
(mid-June to mid-September)
Fall
(mid-September to mid-November)
Physiological phenomenon Blooming period (coloured bracts) Vegetative growth begins Active vegetative growth Flower initiation (flowers and bracts form)
Lighting As much indirect sunlight as possible Bright light (or filtered sunlight)

Indoors: sun

Outdoors: semi-shaded or sunny spot after a period of adjustment

Bright light in day (or filtered sunlight)

14 consecutive hours of total darkness a day for eight to ten weeks

Temperature

Daytime: maximum 20°C to extend life of bracts

Nighttime: 16-17°C

About 20°C 20-24°C or outdoors once all risk of frost is past

20ºC (If possible, temperature of 15-18°C once bracts are completely coloured, to intensify colour)

Watering

Water in moderation

Thoroughly soak the soil mixture

Allow the surface of the soil to dry out slightly between waterings

Cut back on watering after pruning

Water only often enough to prevent the soil from drying out completely

Allow the soil to dry out slightly between wateringsOutdoors, don't allow the plant to wilt

Water in moderation

Thoroughly soak the soil mixture

Allow the surface of the soil to dry out slightly between waterings

Fertilizing No fertilizer needed Start fertilizing once new shoots appear; 20-20-20, once a month Soluble fertilizer (20-20-20) every two weeks

Soluble fertilizer (20-20-20) every two weeks

15-15-30 in early November, for bloom formation

Pruning, repotting and cuttings  

Repot and prune in late April

Cut stems back by at least 1/3

Mist after pruning

Cuttings may be started from May to July

Second pruning in July or August, never after September 1  

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