Plant corms from August through September as soon as they arrive and before the soil becomes persistently cold. Early establishment gives them time to produce roots before autumn flowering and hard freezes. Choose a day when the ground is workable and never saturated. Set each corm 8 to 10 cm (3 to 4 in) deep, pointed end upward, and space them 7 to 10 cm (3 to 4 in) apart. Water once to settle the soil. If autumn becomes very rainy, protect drainage rather than adding thick mulch. For containers, plant at the same time and prepare a sheltered winter position during autumn.
Sale
Sold out
Autumn-flowering corm
Iridaceae
Fall bulbs
Zonatus Crocus (Crocus kotschyanus)
Crocus kotschyanus
Zonatus crocus, the horticultural name for Crocus kotschyanus, produces satiny lilac-pink flowers with a white zone and yellow-orange throat in September and October. The package contains 10 corms to group into a luminous patch about 10 to 12 cm (4 to 5 in) tall. Plant them in full sun and gritty, poor to moderately fertile, sharply drained soil, then keep summer dormancy relatively dry. Hardy in Zone 5, this crocus suits rock gardens, gravel gardens, warm borders, and deep pots protected from excess water. Flowers usually precede the foliage, elegantly extending interest in Quebec gardens as many perennials begin to slow for the season.
Quantity
10 corms
Exposure
Full sun
Hardiness
Zone 5 in perfectly drained soil
Difficulty level
Easy
Discover the plant
Family
Iridaceae
Genus
Crocus
Species
kotschyanus
Type
Autumn-flowering corm
Cycle
Deciduous bulbous perennial
Zonatus crocus (Crocus kotschyanus) opens satiny lilac-pink cups in autumn, marked by a white zone surrounding a yellow throat dotted with orange. Flowers generally emerge before the narrow leaves, giving them a crisp ground-level presence in September and October. Each corm contributes to a small tuft that reaches about 10 to 12 cm (4 to 5 in) tall and eventually a similar spread. The Van Noort package contains 10 corms. This Zone 5 hardy geophyte brightens the late season and can form a lasting colony where winter drainage remains excellent and resting corms are left undisturbed.
Plant the 10 corms from August through September as soon as they arrive, setting them 8 to 10 cm (3 to 4 in) deep and 7 to 10 cm (3 to 4 in) apart. Choose full sun and gritty, poor to moderately fertile soil that drains rapidly. Set each pointed end upward, firm gently, then water to settle soil around the corms. Maintain moderate moisture during active growth, while providing a relatively dry summer dormancy. Avoid waterlogged hollows, fresh manure, and nitrogen-heavy feeding. In Quebec, a raised bed or rock garden offers better protection from repeated freeze-thaw cycles and persistent winter moisture.
Gather the corms in irregular drifts through a rock garden, gravel garden, warm border, or deep container. Their luminous lilac-pink colour pairs with hardy cyclamen, low sedums, small grasses, and silver foliage without hiding the cups. Autumn blooms may offer pollen and nectar to insects still active on mild days. After flowering, allow leaves to develop in winter or spring and yellow completely before removal. Divide clumps only when crowded, working during dormancy and promptly resetting firm corms. This ornamental crocus is not for eating; keep stored and planted corms away from curious children and pets, and wear gloves when handling if skin is sensitive.
Planting guide
From planting to establishment.
Planting depth
8 to 10 cm (3 to 4 in)
Spacing / density
7 to 10 cm (3 to 4 in)
Establishment temperature
15 to 18°C (59 to 64°F)
Establishment time
28 to 56 days
Best planting time
August to September, upon receipt
Propagation
Division of corms and cormlets during dormancy; seed propagation possible for the species
Growing method
On arrival, unpack the 10 corms and promptly plant those that are firm and sound. Choose a sunny, raised, or sloping place where water never remains after rain or snowmelt. Loosen soil to 20 cm (8 in) and incorporate fine grit if it holds moisture; enrich only with a small amount of mature compost. Dig 8 to 10 cm (3 to 4 in) deep, set each corm pointed end upward, and space them 7 to 10 cm (3 to 4 in) apart. An irregular arrangement of all 10 corms creates a natural effect. Replace the soil, firm gently, and water once to remove air pockets. Thereafter maintain moderate moisture during rooting and autumn growth without saturation. Flowers may emerge before leaves, so mark the position to prevent accidental disturbance. Allow all foliage to yellow naturally because it replenishes reserves. Reduce watering sharply through summer dormancy. In Quebec, favour a rock garden or raised bed and avoid depressions where freeze-thaw cycles combine with waterlogged soil. Watch for rodent disturbance after planting and use a physical barrier where necessary. During the first season, check the planting after heavy rain, gently replace displaced soil, and keep fallen leaves from forming a wet mat above the young group.
Soil and care
The right conditions.
Exposure
Full sun
Soil pH
Acid to alkaline, provided drainage is excellent
Hardiness zone
Zone 5 in perfectly drained soil
Minimum temperature
-29°C (-20°F)
Watering
Water after planting to settle the soil, then maintain regular but light moisture during rooting and active growth. Let the surface dry between applications and always stop before water collects. Autumn rainfall is often sufficient in the ground. Reduce irrigation markedly as foliage yellows and throughout summer dormancy, when a warm, relatively dry substrate helps protect the corms from decay.
Soil type
Light, gritty, sharply drained soil with poor to moderate fertility is ideal. Sandy loam or a rock-garden mixture is preferable to compact clay. Drainage must remain rapid through winter and snowmelt, while summer dormancy benefits from dry conditions. On heavy ground, grow in a raised bed and incorporate a stable mineral fraction instead of creating an isolated pocket of moisture-retentive potting soil.
Fertilization
Blend a small amount of mature compost into the soil before planting only if the site is very poor. In spring, a thin compost top-dressing or low-nitrogen bulb fertilizer is sufficient when growth appears weak. Avoid fresh manure and nitrogen-rich feeds, which encourage soft foliage at the expense of corm reserves and increase problems in damp soil. Healthy foliage should remain compact, firm, and naturally green.
Seasonal care
In spring, allow the narrow leaves to continue growing while they remain green. Gently remove debris covering them and watch for places where meltwater accumulates; correct drainage immediately instead of adding fertilizer. A very thin top-dressing of mature compost may be applied if the previous bloom was weak. In summer, zonatus crocus enters dormancy. Reduce watering, avoid digging over the corms, and keep their position marked. This is the best time to lift and divide an overcrowded clump; sort firm corms and reset them promptly. In late summer, prepare new plantings in gritty soil. During autumn, water after setting corms, then let normal rainfall support rooting. Enjoy the lilac-pink flowers in September and October and remove only blooms that are completely spent. Never cut green leaves. In winter, the plant remains dormant or develops foliage depending on conditions. In Quebec, maintain light, permeable protection without compact, wet mulch. Redirect downspouts and runoff because saturated ground during repeated freezes threatens corms more than dry cold. For containers, place the pot against a sheltered wall and insulate its sides without blocking drainage. Also inspect stored corms before replanting and discard any that are soft, mouldy, or damaged. Keep the planting label visible throughout dormancy. If rodents disturb the ground, install a buried mesh basket rather than applying poisons. After storms, remove fallen leaves that form a wet mat over the site. When snow retreats, check that gravel has not sealed the drainage surface and gently loosen only the crust, without striking emerging leaves or corms below.
Container growing
A controlled environment.
Recommended pot size
25 to 30 cm (10 to 12 in) wide and at least 25 cm (10 in) deep
Choose a frost-resistant container at least 25 to 30 cm (10 to 12 in) wide and 25 cm (10 in) deep, with several unobstructed openings. One grouped pot lets all 10 corms create a generous display. Fill it with bulb mix amended with fine grit and avoid saucers that hold water. Set corms 8 cm (3 in) deep, pointed end upward, spacing them without pressing against the walls. Water once after planting, then keep the substrate lightly moist through rooting and bloom. Position the pot in full sun. As foliage yellows, gradually reduce watering and keep the mixture relatively dry in summer. Annual repotting is unnecessary; divide only when flowering declines or corms fill the volume. In Quebec, a container freezes more deeply than open ground. After flowering and before severe cold, place it against a sheltered wall, wrap it with breathable insulation, or temporarily sink it in a drained location. Never store it in a warm room that would interrupt dormancy. Check young shoots for slugs and remove debris that shelters them. Rotate the container weekly while flowers develop so the cups receive even light. During prolonged autumn rain, move the pot beneath an eave while preserving full brightness and air circulation. Label the container because foliage and flowers may disappear completely during dormancy. Replace only the upper layer of mix in quiet years, preserving established roots and cormlets below.
Bloom and dimensions
The complete profile.
Flower color
Satiny lilac-pink, white zone, yellow throat dotted with orange
Foliage color
Medium green with a paler central stripe
Foliage type
Deciduous, linear leaves appearing after or with the flowers
Growth rate
Moderate
Bloom period
Flowers appear in September and October, often before the leaves. Satiny lilac-pink petals surround a white zone and a yellow throat dotted with orange. Each cup remains low and opens more fully in sunshine. Timing varies with planting and autumn weather; a warm, drained site encourages a crisp display, whereas persistent rain may shorten the life of individual blooms. Protect opening cups from hard rain whenever practical.
Fruiting
Not applicable
Harvest
September to October. Allow the flowers to fade naturally to encourage the bulbs to naturalize.
Garden associations
What to plant with it.
Good companions
Pair it with hardy cyclamen, creeping sedums, small fescues, ornamental thymes, and compact artemisias that also appreciate fast drainage. These companions provide low textures without hiding the September and October flowers. Stones, gravel, and silver foliage emphasize the lilac-pink petals and yellow throat. Keep some open space around the corms so light reaches the foliage and air circulates after rain. A dwarf rock-garden iris can also extend spring interest without changing the site requirements. Choose restrained neighbours and thin them when they begin covering the crocus leaves. Avoid thirsty plants whose regular summer irrigation conflicts with the corms’ preferred dry rest.
Avoid planting with
Heavy, waterlogged soils encourage bulb rot. Rodents may occasionally move newly planted bulbs.
Use zonatus crocus as a small autumn accent in rock gardens, gravel gardens, sunny border fronts, drained banks, and alpine troughs. Plant all 10 corms together in a loose shape to create a visible patch rather than a rigid row. It also suits gradual naturalizing in soil that remains dry during summer. In pots, position it beside a path where the coloured throat can be seen, then protect the root zone from deep freezing and excess winter moisture. Mark every group throughout dormancy.
From the garden to inspiration.
Zonatus Crocus is grown for its beautiful autumn flowers and is not intended for consumption. Its satiny pink blooms brighten rock gardens, borders, and containers when few other plants remain in flower. It also provides an important source of nectar for the last pollinators of the season. Its graceful habit adds elegance and brightness to autumn gardens.
Frequently asked questions
Everything toknow.
Zonatus crocus belongs to an autumn-flowering group whose corms use previously stored reserves to launch blooms quickly. Narrow leaves develop afterward, sometimes during winter in mild climates or in spring in colder regions. This rhythm is normal and does not indicate a problem. After flowering, protect emerging foliage and keep it green as long as possible because photosynthesis replenishes the corm. Do not mow the area or tie the leaves. Wait until they have yellowed completely before cleaning. Foliage removed too early reduces the following bloom and slows the natural expansion of the clump. A discreet label prevents accidental digging while no growth is visible. Continue normal care once the leaves reappear and avoid forcing an earlier schedule.
Drainage is the best prevention. Set corms in a rock garden, bank, or raised bed where rain and snowmelt escape quickly. Incorporate fine grit through a broad area of heavy soil; an isolated pocket of potting mix can hold water like a basin. Respect the 8 to 10 cm (3 to 4 in) planting depth, avoid fresh manure, and water only as the soil begins to dry. Reduce irrigation sharply during summer dormancy. In Quebec, redirect downspouts and never compact wet mulch over the group. In containers, keep drainage holes open and empty any saucer after watering. Inspect purchased corms before planting and discard specimens that are soft, mouldy, or badly scarred. Healthy planting material should feel dense and dry.
Yes. A container 25 to 30 cm (10 to 12 in) wide and at least 25 cm (10 in) deep can hold all 10 corms if drainage is generous. Use bulb compost mixed with fine grit, set the corms about 8 cm (3 in) deep, and distribute them without touching the walls. Keep the pot in full sun and water moderately during growth. After foliage yellows, maintain a relatively dry substrate. Because container roots experience colder temperatures, insulate the pot, place it against a sheltered wall, or temporarily sink it into drained ground for a Quebec winter. Check moisture beneath the surface rather than watering by calendar. Rotate the pot during bloom and keep its label in place through the fully dormant period.
Begin by grouping all 10 corms in an irregular shape and choose a location that will not be cultivated each season. Full sun, gritty soil, and relatively dry summer dormancy help corms retain their reserves. After flowering, let foliage yellow completely; this step is essential for producing new corms. Avoid nitrogen-rich fertilizers and frequent summer watering. Mark the position so it is not accidentally dug. When flowers become fewer after several years, lift the clump during dormancy, separate firm cormlets, and promptly reset them at the original depth in a broader but equally well-drained area. Replant cormlets at consistent spacing rather than stacking them together. A colony expands best when surrounding plants do not cast dense shade or demand summer irrigation.
Its strengths, naturally.
Not recommended for pets
Pets
Attracts or supports pollinating insects
Pollinators
