Species Calypso bulbosa | Known

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Is Calypso bulbosa growing in your garden? Record it and all of your plants in Known.

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Names

Common Names: Fairy Slipper, Venus' Slipper, Calypso Orchid, Angel Slipper

Growth

Height: 3-8 inches
Spread: 4-19.5 inches
Growth Rate: 2–5 years

Appearance

Bloom Color: Pink, magenta, or white
Foliage Color: Green

Environment

Hardiness Zones: Zones 4-8
Sunlight Requirements: Partial Sun to Partial Shade; prefers diffused/indirect light and should avoid direct sun, with about 3–6 hours of filtered light.
Soil Type: Loamy, well-drained soil that remains moderately moist and is lime-free, organic-rich, and slightly acidic.
Soil Drainage: Well-drained
Soil pH: 5.5-6.0: Slightly acidic to mildly acidic soils (not alkaline)

Lifecycle

Lifecycle: Perennial
Leaf Lifecycle: Deciduous
Seasons of Interest: Spring and Summer
Bloom Time: Spring (late May to late June)

Reproduction

Propagation Methods: Seeds and Division

Wildlife

Attracts Wildlife: Attracts bees (mainly bumble bees); does not provide nectar.

References

Taxonomy

Taxonomic Rank: Species
Author: (L.) Oakes
Publication: Cat. Vermont Pl. : 28 (1842)

Superior Taxa

Kingdom: Plantae
Subkingdom: Pteridobiotina
Phylum: Angiosperms
Order: Asparagales
Family: Orchidaceae
Genus: Calypso

Inferior Taxa

Calypso bulbosa var. americana Calypso bulbosa var. speciosa Calypso bulbosa var. bulbosa Calypso bulbosa var. occidentalis Calypso bulbosa var. kostiukiae

Synonyms

Limodorum boreale Norna borealis Orchidium arcticum Orchidium boreale Calypso borealis Calypsodium boreale Cypripedium bulbosum Cytherea borealis Cytherea bulbosa Calypso bulbosa f. bulbosa Norna borealis var. europaea Cymbidium boreale

References

Taxonomic data from World Flora Online, accessed June 20, 2024