Plant the bulbs from September through November before the ground freezes. Fall planting allows them to establish roots before winter and resume growth in spring. Choose a well-drained location from the beginning because the bulbs can remain in place for several years and gradually form a colony.
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Ornamental flowering bulb
Amaryllidaceae
Spring starflower (Ipheion uniflorum ‘White Star’)
Ipheion uniflorum ‘White Star’
Ipheion White Star is a small bulbous perennial with fragrant, star-shaped white flowers. Hardy to Zone 3 and easy to naturalize, it suits rock gardens, borders, open woodland edges, containers and carpet-like spring plantings.
Exposure
Full sun to partial shade
Hardiness
Zones 3 to 10
Difficulty level
Easy
Discover the plant
Family
Amaryllidaceae
Type
Ornamental flowering bulb
Cycle
Naturalizing bulbous perennial
Spring starflower (Ipheion uniflorum ‘White Star’) is a small naturalizing bulbous perennial that produces an abundance of crisp white, star-shaped flowers. Each six-tepalled bloom carries a gentle fragrance, while narrow, flexible green foliage forms fine grasslike clumps. The leaves release a garlic-like scent when crushed. Flowers are held on slender stems during spring, and plants can reach approximately 30 cm (12 in) under suitable conditions. Hardy to Zone 3, this selection offered by Van Noort gradually develops into bright colonies when left undisturbed. Its delicate appearance contrasts with a durable, low-maintenance habit that makes it useful in northern spring gardens.
Plant the bulbs in full sun or partial shade in loose, moderately fertile and very well-drained soil. Fall planting is recommended from September through November, setting bulbs approximately 80 mm deep and spacing them 5 cm (2 in) apart. Water lightly after planting to settle the soil around the bulbs, then maintain moderate moisture during active spring growth without allowing the ground to become waterlogged. Once established, plants tolerate brief drier periods and require little maintenance. Allow the foliage to yellow and disappear naturally after flowering so the bulbs can replenish their stored energy before entering summer dormancy. Avoid sites that remain persistently wet during the dormant period.
This small bulb is well suited to rock gardens, borders, gravel gardens, open woodland edges and naturalized plantings where it can gradually form carpets of flowers. Its compact habit also allows it to fit between perennials or beneath deciduous shrubs that admit plenty of spring light. The fragrant flowers attract bees and other early-foraging pollinating insects, adding ecological value to the seasonal display. Combine it with crocuses, grape hyacinths, glory-of-the-snow or small anemones for an airy spring composition. It also performs well in containers, particularly near paths and entrances where its subtle fragrance and finely shaped white flowers can be appreciated at close range.
Planting guide
From planting to establishment.
Spacing / density
Spacing of 5 cm (2 in)
Best planting time
September to November, before the ground freezes
Propagation
Bulbs and division of dormant clumps
Growing method
Plant the bulbs in fall approximately 80 mm deep and 5 cm (2 in) apart in loose, well-drained soil. Position them in full sun or partial shade and water lightly after planting. In spring, maintain moderate moisture during active growth. After flowering, allow the foliage to yellow and disappear naturally. Clumps can then remain undisturbed for several years, gradually multiplying through bulb offsets to form naturalized colonies.
Soil and care
The right conditions.
Exposure
Full sun to partial shade
Soil pH
Acidic to alkaline
Hardiness zone
Zones 3 to 10
Minimum temperature
Approximately -40 °C
Watering
Low to moderate; maintain moderate spring moisture and reduce during dormancy
Soil type
Light, humus-rich and well-drained
Fertilization
Generally unnecessary in fertile soil; feed lightly in spring in poor soil or containers
Seasonal care
In fall, plant the bulbs in a well-drained location and water lightly if the soil is dry. In spring, allow shoots to emerge naturally and provide moderate moisture when rainfall is insufficient. Fertilizing is generally unnecessary in fertile garden soil, although a light feeding may help in containers or poor ground. After flowering, do not remove the leaves immediately; let them yellow and dry so the bulbs can rebuild their reserves. Once the foliage disappears, reduce watering during summer dormancy. Established clumps need little attention and should be divided only when they become overly crowded or when additional plants are wanted elsewhere in the garden.
Container growing
A controlled environment.
Recommended pot size
Minimum 15 to 20 cm (6 to 8 in) deep
Bloom and dimensions
The complete profile.
Flower color
Pure white
Foliage color
Green
Foliage type
Deciduous, basal, narrow and seasonal
Growth rate
Moderate, followed by gradual spread through naturalization
Bloom period
Spring, generally mid to late spring
Maximum height
30 cm (12 in)
Maximum width
10 cm (4 in) per established clump
Garden associations
What to plant with it.
Good companions
Crocuses, grape hyacinths, glory-of-the-snow, small anemones and low perennials
Avoid planting with
Waterlogged soils, poor drainage and dense shade
Rock gardens, borders, naturalizing, open woodland and containers
Frequently asked questions
Everything toknow.
Plant the bulbs approximately 80 mm deep and space them about 5 cm (2 in) apart. They can be arranged in small groups to create a natural effect quickly. Water lightly after planting to settle the soil, then avoid keeping the ground continuously waterlogged.
Yes. White Star is well suited to naturalizing and gradually develops broader clumps when left undisturbed in a favourable location. Avoid removing the foliage before it has fully yellowed and limit soil disturbance around the bulbs to encourage multiplication over the years.
Yes. Use a container at least 15 to 20 cm (6 to 8 in) deep with excellent drainage. The bulbs can be planted relatively close together for a dense display. In Quebec climates, provide additional winter protection to limit repeated freeze-thaw cycles around the container.
Yes. Its fragrant white flowers are visited by bees and other insects that forage early in the season. When planted with several small bulb species that bloom in succession, White Star can help provide floral resources during a period when relatively few garden plants are flowering.
Its strengths, naturally.
Not recommended for pets
Pets
Attracts or supports pollinating insects
Pollinators
Less attractive or generally tolerated by deer
Deer
