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Easter Cattleya

Cattleya mossiae, Orchidaceae

Sources last read 14 September 2026.

Not yet rated How forgiving it is has not been judged here yet.

Also called Easter Orchid, Moss' Cattley's and Mrs. Moss' Cattleya.

Easter Cattleya (Cattleya mossiae), the whole plant.
sunoochi from Sapporo, Hokkaido, Japan, CC BY 2.0 · Wikimedia Commons

Toxicity is partly unassessed

  • Listed as non-toxic to cats by ASPCA.
  • Listed as non-toxic to dogs by ASPCA.
  • Not assessed for people. RHS publishes no harm statement for this plant. That is not a finding of safety: none of the sources read for this site gives an answer either way. Treat it as unknown.

What the sources say about its care

Light
Full sun, Partial shade
RHS · read 13 September 2026
Water
Well-drained or Moist but well-drained
RHS · read 13 September 2026
Humidity

No source read publishes a humidity figure for any plant on this site. What follows is general guidance for foliage plants.

ASHRAE recommends indoor relative humidity between 30% and 60% 30–60%
Penn State Extension · read 13 September 2026
Temperature

How cold this tolerates, not what it prefers. No source read for this site publishes a preferred range for a plant indoors.

H1A — warmer than 15°C 15 °C
RHS · read 13 September 2026
Toxic to cats
Non-toxic
ASPCA · read 13 September 2026
Toxic to dogs
Non-toxic
ASPCA · read 13 September 2026
Harmful to people
No statement of harm to people is published for this plant; that absence is not evidence it is safe.
RHS · read 13 September 2026

Routine care

Watering
Through the growing season, water and feed regularly. Let all excess water drain so the plant is not left standing in it. In winter, cut back on water and feed and keep it somewhere bright and sunny.
RHS · read 13 September 2026
Feeding
Through the growing season, water and feed regularly. In winter, cut back on watering and feeding, and keep the plant somewhere bright and sunny.
RHS · read 13 September 2026
Repotting
Repot roughly every 2-3 years: only once the plant has outgrown its pot, or before the mix starts to break down. Wait until new growth appears in spring before repotting.
RHS · read 13 September 2026
Propagation
By division, seed or stem cuttings.
NC State Extension · read 13 September 2026
Once a mature plant outgrows its pot it can be divided. Give each piece no fewer than 3 older growths holding enough stored energy and water to feed new growth and ease stress after repotting.
RHS · read 13 September 2026
Pruning
Pruning is not needed.
RHS · read 13 September 2026
Pests and diseases
Can be troubled by hemispherical scale, Boisduval scale and greenhouse thrips.
NC State Extension · read 13 September 2026
Can be troubled by mealybugs, scale insects and glasshouse red spider mite, and thrips can damage flowers. Diseases: usually none. Poor air movement can lead to bacterial or fungal rots; virus diseases are kept from spreading by good hygiene and sterilised cutting tools.
RHS · read 13 September 2026

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About the plant

Cattleya mossiae, commonly known as the Easter orchid, is a species of labiate Cattleya orchid. The white-flowered form is sometimes known as Cattleya wagneri. The diploid chromosome number of C. mossiae has been determined as 2n = 40. The haploid chromosome number has been determined as n = 20.

From Wikipedia, CC BY-SA 4.0 · read 13 September 2026

Native range
N. Venezuela
World Checklist of Vascular Plants, June 2026 release, CC BY.
Kew WCVP · read 13 September 2026
Northern Venezuela
NC State Extension · read 13 September 2026
Venezuela
RHS · read 13 September 2026
Climate
wet tropical
World Checklist of Vascular Plants, June 2026 release, CC BY.
Kew WCVP · read 13 September 2026
Growth form
pseudobulbous epiphyte
World Checklist of Vascular Plants, June 2026 release, CC BY.
Kew WCVP · read 13 September 2026
Epiphyte, Herbaceous Perennial; habit erect
NC State Extension · read 13 September 2026
Clump forming (evergreen)
RHS · read 13 September 2026
Size
Height 3–24 in; width 3–24 in
NC State Extension · read 13 September 2026
Height 0.1-0.5 metres; spread 0.1-0.5 metres after 5–10 years
RHS · read 13 September 2026
Flowering
Flowers gold/yellow, pink, purple/lavender, white
NC State Extension · read 13 September 2026
Flowers pink in spring and summer; brown in spring and summer; white in spring and summer; purple in spring and summer
RHS · read 13 September 2026

Other Cattleya

More of the Orchidaceae family

Plants with similar care

Sources

What this does not cover

The figures above are what published sources say, not measurements of the plant in your room. They say nothing about your pot size, your water, the season, or how far from the glass the plant stands, and those decide more than any figure here does.

Humidity has no species figure because no source read for this site publishes one, and the only temperature published for this plant is a cold floor. The simulator fills those gaps with general figures for its kind of plant, marked as general and listed on how we read sources. Where a toxicity row says the plant was not assessed, that is the absence of a finding and not a finding of safety.

If something is already wrong, the diagnosis tool asks about the soil, the window and the watering, which is where the answer usually is.