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Seasonal care

Orchid care calendar

What to do, and when, through the year. Written for indoor growers in the Northern Hemisphere; shift by six months south of the equator.

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Spring March – May

Repot plants that have finished flowering as soon as new root tips show.
Resume regular feeding at quarter to half strength as growth picks up.
Increase watering gradually as days lengthen and temperatures rise.
Move plants back from bright south windows as the sun strengthens; watch for sunburn.
Check new growth for aphids and mealybugs.

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Summer June – August

Peak growth: water and feed most consistently now.
Provide shade from midday sun and good air movement; many orchids enjoy a sheltered spot outdoors.
Raise humidity with trays or grouping; mist Vandas and mounted plants daily.
Keep an eye on spider mites in hot, dry rooms.
Avoid repotting plants in active spike or bloom.

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Autumn September – November

Give Phalaenopsis cooler nights (around 15–18 °C) for a few weeks to trigger flower spikes.
Bring outdoor plants in before the first cold nights.
Reduce feeding; switch to a bloom formula if you use one.
Water a little less as light and temperatures drop.
Start the dry winter rest for nobile Dendrobiums and Catasetum types.

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Winter December – February

Maximise light: move plants to the brightest window or add a grow light.
Water less often, in the morning, and keep water out of crowns.
Keep plants away from cold glass, radiators and draughts.
Enjoy the flowers; stake spikes as they develop and keep conditions steady to avoid bud drop.
Hold off on repotting unless roots are rotting.

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