Thompson & Morgan Hollyhock Crème De Cassis Seeds - 75 Seeds
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This guide is for gardeners seeking to add dramatic height and unique color to their borders. The Thompson & Morgan Hollyhock 'Crème de Cassis' seeds offer a key benefit of unique, veined blooms in blackcurrant and dusky pink shades, creating a layered effect. A caveat is that these are perennials that flower in their second year and require support as they grow tall.
All features
| Model Part Number | 900957 |
|---|---|
| Brand | Thompson & Morgan |
Extended Product Information
FAQs
When is the best time to sow Hollyhock 'Crème de Cassis' seeds?
You can sow the seeds in spring or autumn. For spring sowing, aim for after the last frost. Autumn sowing allows for earlier flowering the following year.
How tall do these hollyhocks grow?
Hollyhocks are known for their height, often reaching significant heights. While specific heights vary, expect them to provide substantial vertical interest in your garden.
Do I need to stake my hollyhocks?
Yes, due to their tall and often slender growth habit, staking is highly recommended to support the flower spikes, especially in windy locations.
Can I grow these in pots?
While they can be grown in large pots, hollyhocks generally perform best when planted directly in the ground where they have ample space for root development and support.
Are the flowers truly edible?
Yes, the flowers of the 'Crème de Cassis' variety are edible and can be used for culinary purposes such as crystallising for decorations or making syrups.
What happens to hollyhocks in winter?
As perennials, they will die back to the ground in winter and regrow from the base in spring. Some winter protection might be beneficial in very cold climates.
How much sun do they need?
Hollyhocks require full sun to flower well. Aim for a location that receives at least 6-8 hours of direct sunlight per day.
Troubleshooting
Seeds not germinating
Ensure seeds are kept consistently moist and are at the optimal germination temperature (15–20°C). Check that they are sown at the correct depth and not too deep.
Plants are weak or leggy
Ensure the plant is receiving adequate sunlight. Check soil fertility and consider a balanced feed during the growing season. Provide support for tall growth.
Leaves are spotted with rust
Improve air circulation by spacing plants adequately. Remove and destroy affected leaves promptly to prevent spread. Avoid overhead watering which can encourage fungal issues.
No flowers in the first year
Hollyhocks are typically biennial or short-lived perennials; they flower in their second year. Ensure adequate sunlight and nutrients for future flowering.
Pros and Cons
Pros
- Unique and eye-catching flower coloration.
- Provides significant vertical interest in garden designs.
- Edible flowers offer culinary applications.
- Perennial nature ensures long-term garden value.
- Mix of bloom types adds texture and depth.
Cons
- Flowers appear in the second year, requiring patience.
- Tall growth necessitates staking or support.
- Requires a sunny, sheltered location to perform best.
- Susceptible to rust if air circulation is poor.
Setup, Compatibility & Care
Sowing: Sow seeds in spring or autumn. Germination typically occurs at temperatures between 15–20°C. Keep the soil moist during this period.
Location: Plant in a position that receives full sun for best flowering. A sheltered spot will protect the tall stems from strong winds.
Soil: Thrives in fertile, well-drained soil. Ensure good drainage to prevent root rot.
Watering: Water regularly, especially during dry spells and when the plant is actively growing. Keep moist during germination.
Feeding: Apply a balanced feed during the growing season to support robust growth and flowering.
Support: As the plants grow tall, they will likely require staking or other forms of support to prevent them from flopping over or breaking in wind.
Air Circulation: Ensure adequate spacing between plants to promote good air circulation, which helps reduce the risk of fungal diseases like rust.