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Thompson & Morgan Hollyhock Creme De Cassis - 1 Seed Packet

Not AvailableThompson & Morgan Hollyhock Creme De Cassis - 1 Seed Packet
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With double, semi-double and single blackcurrant veined blooms which fade to a paler berry shade a...

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This guide is for gardeners looking to add stunning, edible blooms to cottage or wildlife gardens. The Thompson & Morgan Hollyhock 'Crème de Cassis' offers unique blackcurrant-veined flowers that fade to a softer berry shade, attracting pollinators and providing culinary interest. A potential caveat is its need for a sheltered spot and well-drained soil to thrive. Key features include its RHS award for pollinators, versatile use in baking and syrups, and a hardy perennial nature.

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Model Part Number38461
BrandThompson & Morgan

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FAQs

When is the best time to sow Thompson & Morgan Hollyhock 'Crème de Cassis' seeds?

You can sow seeds from February to March indoors, or from September to October outdoors. For earlier blooms and stronger plants, especially in heavy soils, consider sowing in a cool greenhouse in late summer and overwintering.

How far apart should I plant Hollyhock 'Crème de Cassis' seedlings?

Plant seedlings at least 45cm (18in) apart, but for optimal air circulation and disease prevention, spacing them 60cm (24in) apart is recommended.

Can the flowers of Hollyhock 'Crème de Cassis' be eaten?

Yes, the flowers are edible. They can be crystallised for cake decorations or used to make a delicate syrup for desserts and drinks.

What kind of soil is best for growing these hollyhocks?

Hollyhocks prefer fertile, well-drained soil. Improving heavy or poorly drained soil is recommended for best results.

Why is it important to plant hollyhocks in a sheltered position?

Hollyhocks grow very tall and can be susceptible to wind damage. A sheltered position helps prevent the stems from bending or breaking, ensuring the plant maintains its upright form.

What does 'RHS award winner for pollinators' mean?

This means the plant has been recognized by the Royal Horticultural Society for its value in attracting and supporting bees and other pollinating insects, contributing positively to garden biodiversity.

How tall will the Hollyhock 'Crème de Cassis' grow?

These hollyhocks can reach a height of up to 180cm (approximately 71 inches).

Troubleshooting

Seeds not germinating

Ensure seeds are not buried too deeply, that light is reaching them, and that the germination temperature (15-20°C) is maintained. Check compost moisture levels; it should be damp but not waterlogged.

Plants wilting

Check soil drainage. Wilting can indicate overwatering or poor drainage. Ensure the soil is well-draining. If underwatered, water thoroughly at the base of the plant.

Yellowing leaves or leaf spots (possible Hollyhock Rust)

Improve air circulation by spacing plants adequately (60cm apart). Remove and destroy affected leaves promptly. Avoid overhead watering. Fungicides can be used as a preventative measure, but good cultural practices are key.

Tall stems bending or breaking

Provide support by staking the plants early on, especially if grown in an exposed or windy location. Ensure plants are in a sheltered spot as recommended.

Pros and Cons

Pros

  • Attractive and unique flower coloration
  • Attracts beneficial pollinators
  • Edible flowers offer culinary uses
  • Hardy perennial for long-term enjoyment
  • Adds significant height and structure to gardens

Cons

  • Requires a sheltered position to prevent wind damage
  • Needs fertile, well-drained soil
  • Can be susceptible to hollyhock rust if air circulation is poor
  • May require staking in exposed locations
  • Results can vary based on growing conditions

Setup, Compatibility & Care

Sowing: Sow seeds either February to March indoors or September to October outdoors. For indoor sowing, use a good, free-draining, damp seed compost. Surface sow and cover very lightly with compost or vermiculite. Germination occurs best in a propagator or sealed container at 15-20°C (59-68°F). Do not exclude light, as it aids germination. For late summer sowing, use a cool greenhouse and overwinter plants in cool, well-lit conditions for larger plants the following spring, especially recommended for heavy or poorly drained soils.

Transplanting: Once seedlings are large enough to handle, transplant them into trays or 7.5cm (3in) pots. Grow them on in cooler conditions for 10-15 days before planting outdoors.

Planting Out: Plant outdoors after all risk of frost has passed. Space plants at least 45cm (18in) apart, and ideally 60cm (24in) apart to ensure good air circulation and help prevent fungal diseases like hollyhock rust.

Position: Choose a sunny border with fertile, well-drained soil. A position sheltered from strong winds is crucial to prevent the tall stems from breaking.

Care: Water regularly, especially during dry periods. Deadhead spent flowers to encourage further blooming. Consider staking taller plants if they are in an exposed location. Ensure good air circulation around the plants.