Grow Light for Zephyranthes: Rain Lilies in Pots

Pink rain lily flowers under a compact LED light

A grow light for zephyranthes helps when potted rain lilies come indoors for winter. These small bulbs like sun outdoors, so a bright lamp fills the gap on short days.

The short answer

NC State Extension notes rain lilies grow in full sun to part shade plus pots can come indoors. Mississippi State Extension lists high light as 1,000 or more footcandles. Its guide notes LED grow lights give tuned color. Cool white fluorescent tubes also work for indoor plants.

Clump of thin grassy leaves in a blue glazed pot

How much light do rain lilies need indoors?

NC State notes Zephyranthes candida flowers most in full sun. Indoors that means the high light range. Mississippi State groups indoor light in three bands.

Light level Footcandles Fit for rain lilies
High 1,000 or more Closest to full sun
Medium 500 to 1,000 Leaves but fewer flowers
Low 50 to 500 Too dim

Source: Mississippi State University Extension.

Which grow light works for zephyranthes?

Mississippi State notes LED grow lights are color tuned. Cool white fluorescent lamps also suit indoor plants.

Do potted rain lilies need a rest indoors?

NC State advises a cool, frost free spot with barely moist soil for pots brought in over winter. UF/IFAS notes rain lilies flower through the year when alternately wet then dry.

Row of rain lily pots on a tray under a grow light

How to: step by step

  1. Bring pots in before frost.
  2. Set them in a cool room.
  3. Hang a grow light over the pots.
  4. Run the lamp on a timer.
  5. Water only when the soil is nearly dry.
  6. Move pots back outside after frost.

Troubleshooting

Leaves but no flowers: low light. Lower the lamp.

Bulbs rotting: wet soil. NC State advises barely moist soil in winter.

Leaves scorched outdoors: hot sun. NC State notes afternoon shade helps in extreme heat.

For lamps see grow lights for cannabis plus led light distance cannabis. Read grow light timers plus cannabis seeds. Kind Seed Co also stocks cannabis seeds.

Sources

FAQ

Can rain lilies grow indoors?

NC State Extension notes containers can be brought indoors for winter.

How much light do rain lilies need?

NC State notes full sun gives the most flowers. Mississippi State lists high indoor light as 1,000 or more footcandles.

Do LED grow lights work for zephyranthes?

Mississippi State notes LED grow lights are color tuned. Cool white fluorescent lamps also suit indoor plants.

How often should potted rain lilies be watered?

UF/IFAS notes rain lilies flower through the year when alternately wet then dry.

Where should rain lilies sit in winter?

NC State advises a cool, frost free spot with barely moist soil.

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