Hardy Swamplily (Crinum bulbispermum)

Hardy Swamplily (Crinum bulbispermum) is a striking perennial bulbous plant known for its large, trumpet-shaped flowers and strap-like leaves, adding dramatic flair to gardens.

Above information is sourced from Wikipedia

Sunlight

Prefers full sun to partial shade, requiring at least 6 hours of direct sunlight for optimal flowering.

Watering

Water regularly during the growing season, allowing soil to dry slightly between waterings. Reduce in winter.

Soil

Well-draining soil is essential. Prefers fertile loam but tolerates a range of soil types.

Temperature

Thrives in temperatures between 15-25 °C. Can tolerate cooler temperatures and light frost.

Habitat

Outdoor, Greenhouse

Fertilizer

Feed with a balanced liquid fertilizer every 4-6 weeks during the growing season. Cease in autumn.

Care Requirements

Light

Prefers full sun to partial shade, requiring at least 6 hours of direct sunlight for optimal flowering.

Full sun is best for abundant blooms.

Water

Water regularly during the growing season, allowing soil to dry slightly between waterings. Reduce in winter.

Keep soil moist but not waterlogged.

Soil

Well-draining soil is essential. Prefers fertile loam but tolerates a range of soil types.

Temperature

Thrives in temperatures between 15-25 °C. Can tolerate cooler temperatures and light frost.

Protect from hard freezes.

Habitat

Outdoor, Greenhouse

Fertilizer

Feed with a balanced liquid fertilizer every 4-6 weeks during the growing season. Cease in autumn.

Use a general-purpose plant food.

Plant Overview

Plant Type

Herb

Plant Category

Flowering, Ornamental

Plant Place Type

Ground, Garden, Pot

Plant Environment

Outdoor, Greenhouse

Lifespan

Perennials

Plant Height

0.6-1.2 m

Spread

0.6-1.2 m

Growth Rate

Moderate

Dormancy

Semi-dormant in cold climates

Leaf Color

Green

Leaf Type

Strap-like

Flower Size

8-15 cm

Optimal Sunlight Lux

50000

Image Gallery

Flowering & Fruiting Cycles

Monthly activity intensity for bloom and fruit across both hemispheres.

Northern hemisphere

Flowering & fruiting calendar

Peak bloom · JunPeak fruit · Aug

FloweringFruiting

Southern hemisphere

Flowering & fruiting calendar

Peak bloom · JunPeak fruit · Jul

FloweringFruiting

Synonyms

Amaryllis bulbisperma Burm.f.

Amaryllis riparia Burch. ex Kunth

Crinum capense Herb.

Crinum govenium Herb.

Crinum riparium (Herb.) Herb.

Crinum spofforthianum Herb. ex Sweet

Taxonomy

kingdomPlantae
divisionTracheophyta
classLiliopsida
orderAsparagales
familyAmaryllidaceae
genusCrinum
speciesCrinum bulbispermum

Toxicity

Toxic for humans

Yes

Rating: 3/5

Toxic for pets

Yes

Rating: 3/5

Edible

Contains lycorine and other alkaloids, which can cause vomiting, diarrhea, and drooling if ingested. Skin irritation is possible.

Additional Care Tips

Water thoroughly when the top inch of soil feels dry. Reduce watering significantly during the winter dormancy period. Ensure good drainage to prevent bulb rot.

Remove spent flower stalks to encourage more blooms and maintain a tidy appearance. Cut back dead or yellowing foliage in late autumn or early spring before new growth emerges.

Easily propagated by dividing the bulb offsets in spring. Seeds can also be sown fresh, but flowering may take several years.

Repot container-grown plants every 2-3 years, or when they become root-bound. Use fresh potting mix and a slightly larger pot, preferably in early spring.

FAQs

How often should I water my Hardy Swamplily?

Water regularly during the growing season, allowing the top inch of soil to dry out between waterings. Reduce watering significantly in winter when the plant is dormant.

Can Crinum bulbispermum survive frost?

Yes, Crinum bulbispermum is known for its hardiness and can tolerate light frost. In colder climates, protecting the bulb with mulch or bringing potted plants indoors is recommended.

Why is my Hardy Swamplily not flowering?

Lack of sufficient sunlight is a common reason. Ensure the plant receives at least 6 hours of direct sun daily. Overwatering or poor soil drainage can also inhibit flowering.

Is Crinum bulbispermum poisonous to pets?

Yes, Crinum bulbispermum contains alkaloids that are toxic to pets, causing symptoms like vomiting and diarrhea if ingested. Keep it away from curious animals.

How do I propagate Crinum bulbispermum?

The easiest method is by dividing the offsets (bulblets) that grow around the main bulb. This is best done in spring when repotting.

Care Requirements

Light

Prefers full sun to partial shade, requiring at least 6 hours of direct sunlight for optimal flowering.

Full sun is best for abundant blooms.

Water

Water regularly during the growing season, allowing soil to dry slightly between waterings. Reduce in winter.

Keep soil moist but not waterlogged.

Soil

Well-draining soil is essential. Prefers fertile loam but tolerates a range of soil types.

Temperature

Thrives in temperatures between 15-25 °C. Can tolerate cooler temperatures and light frost.

Protect from hard freezes.

Habitat

Outdoor, Greenhouse

Fertilizer

Feed with a balanced liquid fertilizer every 4-6 weeks during the growing season. Cease in autumn.

Use a general-purpose plant food.

Plant Overview

Plant Type

Herb

Plant Category

Flowering, Ornamental

Plant Place Type

Ground, Garden, Pot

Plant Environment

Outdoor, Greenhouse

Lifespan

Perennials

Plant Height

0.6-1.2 m

Spread

0.6-1.2 m

Growth Rate

Moderate

Dormancy

Semi-dormant in cold climates

Leaf Color

Green

Leaf Type

Strap-like

Flower Size

8-15 cm

Optimal Sunlight Lux

50000

Additional Care Tips

Water thoroughly when the top inch of soil feels dry. Reduce watering significantly during the winter dormancy period. Ensure good drainage to prevent bulb rot.

Remove spent flower stalks to encourage more blooms and maintain a tidy appearance. Cut back dead or yellowing foliage in late autumn or early spring before new growth emerges.

Easily propagated by dividing the bulb offsets in spring. Seeds can also be sown fresh, but flowering may take several years.

Repot container-grown plants every 2-3 years, or when they become root-bound. Use fresh potting mix and a slightly larger pot, preferably in early spring.

FAQs

How often should I water my Hardy Swamplily?

Water regularly during the growing season, allowing the top inch of soil to dry out between waterings. Reduce watering significantly in winter when the plant is dormant.