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Crocus Chrysanthus Prins Claus

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Add a royal touch to your garden with Crocus Prins Claus (Crocus chrysanthus)! Featuring crisp white petals accented by rich purple splashes and vibrant orange stamens, these elegant blooms stand out at just the right height to create a captivating display without overpowering other plants. Perfect for lawns, rockeries, borders, and containers, they thrive in full sun to partial or light shade and adapt to cool to subtropical climates, handling temperatures as low as -15°C. With graceful grass-like foliage following the flowers, they naturalise with ease and handle dry conditions once established. Easy to grow, long-lasting, and simply irresistible!

 

Description

Crocus Prins Claus (Crocus chrysanthus)

Crocus Prins Claus is a captivating member of the Iridaceae family, admired for its striking two-tone petals—pristine white with deep royal purple accents—and bright yellow stamens that add a touch of sunshine to early spring displays. Belonging to Crocus chrysanthus, commonly called Snow Crocus, it’s one of the earliest to bloom, bringing vibrant colour when few other flowers are in sight. Native to Southern Europe and the Mediterranean, this early-blooming corm perennial is cherished for its hardiness and adaptability, thriving across a range of garden settings year after year.

Uses in the Garden

Crocus Prinse Claus brings a burst of early spring colour, perfect for naturalising lawns, borders, and rock gardens. These cheerful blooms not only brighten the garden but also attract pollinators, making them both beautiful and beneficial. Plant them in clumps to create stunning drifts of colour or pair them with ornamental grasses for a natural, effortless look.

Key Uses:

  • Naturalising in lawns and garden beds
  • Adding early colour to borders and rock gardens
  • Planting in containers for portable displays
  • Providing an early food source for pollinators

Climate Suitability

This variety thrives in cool to subtropical climates and tolerates temperatures as low as -15°C, making it ideal for frosty winters. Crocus Prins Claus benefits from distinct seasonal changes for optimal blooming.

Climate Tips:

  • Cool and temperate climates: Ideal for long-term growth.
  • Mediterranean climates: Use well-drained soil with light mulch.
  • Arid climates: Ensure well-drained soil and mulch to retain moisture.
  • Subtropical climates: Plant in cooler, shaded spots.

How to Store Crocus Bulbs Upon Arrival

In mild winter regions, a 6-week chilling period before planting is recommended to trigger flower production. Upon arrival, inspect bulbs and store them in a cool, dry place away from moisture and heat.

Storage Tips:

  • Keep bulbs in a breathable container like a mesh or paper bag.
  • Store in a cupboard or shed.
  • Avoid storing near fruit that releases ethylene gas.
  • Plant from March onwards, once the ground has cooled.

How to Plant Crocuses

  1. Location: Full sun to part shade, under deciduous trees is ideal.
  2. Soil: Well-drained soil is essential; amend clay soil with sand or compost.
  3. Depth & Spacing: Plant bulbs 10 cm deep and 7-10 cm apart. In warmer climates, plant deeper.
  4. Watering: Water thoroughly after planting. Once established, they require minimal watering.
  5. Fertilising: Apply blood and bone or a balanced fertiliser at planting and again in early spring. If skipped at planting time, apply before flowering.
  6. Mulching: Add a light layer of mulch to retain moisture and protect bulbs.

Aftercare

Allow the foliage to die back naturally after blooming to help the bulbs store energy for the next season. Avoid cutting back leaves too early, as this can weaken the bulbs.

Aftercare Tips:

  • Water sparingly during dormancy.
  • Refresh mulch annually to protect bulbs and suppress weeds.

Division

Crocus multiply over time and should be divided every 3-5 years to maintain healthy growth.

How to Divide:

  1. When: Late summer during dormancy.
  2. How: Gently lift clumps, separate the corms, and replant or store them.
  3. Replanting: Maintain the same depth and spacing to encourage growth.

Pests and Diseases

Crocuses are low maintenance but can be affected by pests and diseases.

Common Pests:

  • Slugs and Snails: Use crushed eggshells or coffee grounds as natural deterrents.
  • Rodents: Cover newly planted bulbs with chicken wire.

Common Diseases:

  • Botrytis (Grey Mould): Ensure good air circulation and avoid overwatering.
  • Corm Rot: Prevent by planting in well-drained soil.

Safety

Crocuses are harmful if eaten, potentially causing stomach upset in humans and pets. If ingested or if any symptoms occur, seek medical advice immediately.

Safety Tips:

  • Keep bulbs out of reach of pets and children.
  • Wear gloves when handling bulbs if you have sensitive skin.
  • Monitor pets to prevent accidental ingestion.

Supplied as dormant bulbs.

Additional information

Price Code

B – Aqua Pack

Botanical Name

Crocus chrysanthus

Quantity in Pack

4 Bulbs

Flowering Time

Late Winter to Spring

Planting Time

Plant from March onwards once the ground has cooled.

Growing Height

8-15 cm

Planting Depth

Plant 10 cm deep. For those in mild climates, plant twice as deep to ensure they stay cool.

Soil

Crocuses need well-draining soil to prevent corm rot. Light sandy soil enriched with organic matter like compost or a well decayed manure is ideal. Avoid heavy, clayey soils or amend them with sand or grit to improve drainage.

For pots, choose a high-quality potting mix designed for bulbs or flowers, which typically includes perlite or vermiculite for excellent drainage and aeration.

How to Plant

Choose a spot with full sun to partial shade, ensuring at least 4-6 hours of sunlight daily. Loosen the top 20 cm of soil to improve drainage and help corms take root. Mix in well-rotted compost, blood and bone, or a balanced fertiliser for nutrients.

Plant corms 10 cm deep, or twice as deep in warmer climates to protect from heat. Space them 7-10 cm apart with the pointed side up. Cover with soil, press gently to remove air pockets, and water lightly to settle the soil.

Apply a thin layer of mulch to retain moisture, regulate temperature, and suppress weeds.

For pots, use a quality potting mix and follow the same planting steps. Corms can be placed closer together, ensuring they don't touch. A 15 cm pot can comfortably hold up to 8 corms for a vibrant display.

Watering

Keep the soil slightly moist during the growing season, but avoid waterlogging to prevent rot. After blooming, as crocuses enter dormancy, reduce watering significantly. They prefer drier conditions during dormancy to prevent corm rot.

In cool regions with consistent rainfall, such as Tasmania or parts of Victoria, ensure the planting area has excellent drainage. Raised beds, rockeries, or slopes can help reduce water accumulation. In warmer regions, avoid overwatering during summer dormancy. Use well-drained soil and minimise moisture, especially in humid, subtropical areas, to protect the corms.

Fertilise

If the soil isn’t enriched with compost or well-decayed manure, apply blood and bone or a complete fertiliser when preparing the soil, or just before flowering in winter to support growth. Thereafter, top dress at the end of summer with general fertiliser or bulb food to boost nutrients before the growing season. Alternatively, apply a balanced fertiliser in early spring.

Pruning

After flowering, let the foliage wither naturally to help the corms store energy for next season. Once yellow and dry, trim back with clean scissors. For lawn plantings, delay mowing until foliage fully dies back to avoid disturbing the corms.

Crocuses can naturalise in well-drained soil, but aftercare depends on climate. In cooler regions with occasional rain, they thrive with little intervention. In warmer, humid areas prone to wet summers, monitor soil moisture to prevent rot. If heavy rain is expected, lift and store corms in a cool, dry place during dormancy.

Crocuses tolerate temperatures down to -15°C, but insufficient winter chill can impact future blooms. In warmer, humid regions, a 6-week chilling period during dormancy is essential to promote consistent flowering. Storing the corms in a refrigerator each year can help meet their cold requirements, though replacing them annually is optional. Gardeners in humid climates may find it easier to replace corms each year to achieve the best results, as even with chilling, the lack of natural cold may reduce bloom quality over time.

In warmer, drier regions, lifting may not be necessary, as natural winters often provide sufficient chilling. To prevent rot from heavy rain, plant in well-drained soil and consider sheltered spots, such as under deciduous trees, where the corms benefit from drier conditions during dormancy.

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