Marshalls Garden Agapanthus Black Jack - 3 x 9cm Plants
Not Available
Currently unavailable
Currently out of stock
This product is not available at the moment. Check back later or explore other options below.
Product Information
Full details
This guide is for gardeners seeking a dramatic and reliable flowering perennial for borders, pots, and coastal areas. The Agapanthus 'Black Jack' offers a unique deep blue-black bloom and repeat-flowering capability, providing extended seasonal interest. A minor consideration is its perennial nature, requiring proper overwintering in colder climates.
All features
| Model Part Number | 51305397 |
|---|---|
| Brand | Marshalls Garden |
Extended Product Information
FAQs
When is the best time to plant Agapanthus 'Black Jack'?
Spring is the ideal time to plant Agapanthus 'Black Jack', allowing it to establish roots before the heat of summer.
How often should I water my Agapanthus 'Black Jack'?
Water regularly after planting until established. Once established, it is drought-tolerant and only requires watering during extended dry periods.
Can Agapanthus 'Black Jack' be grown in pots?
Yes, it is very well-suited for container growing. Ensure the pot has drainage holes and use a free-draining compost.
Does Agapanthus 'Black Jack' need winter protection?
In milder climates, it can often survive outdoors. In regions with hard frosts, it is advisable to provide winter protection, such as a thick mulch or moving pots to a sheltered location.
How do I encourage repeat flowering?
Deadheading spent flower stalks encourages the plant to produce more blooms. Regular feeding in spring and early summer also supports prolific flowering.
What is the significance of the RHS Chelsea Flower Show award?
Being named Plant of the Year 2023 signifies its exceptional horticultural merit, aesthetic appeal, and garden performance as judged by horticultural experts.
Is it suitable for coastal gardens?
Yes, Agapanthus 'Black Jack' is an excellent choice for coastal gardens due to its tolerance for heat and drought, and its general resilience.
Troubleshooting
Plant not flowering
Ensure the plant receives adequate sunlight and is not overcrowded. Apply a balanced fertilizer in spring. Older plants may benefit from division.
Yellowing leaves
This can be due to overwatering, poor drainage, or nutrient deficiency. Check soil moisture and ensure good drainage. If soil is consistently wet, repot or amend soil. Consider a liquid feed if deficiency is suspected.
Wilting despite watering
Check for root rot caused by poor drainage. Ensure the pot has drainage holes and the soil is not waterlogged. The plant may also be suffering from extreme heat stress; provide temporary shade and consistent moisture.
Frost damage to foliage
In colder regions, protect the plant with mulch or bring pots indoors during frost. Cut away any damaged foliage in spring once new growth appears.
Pros and Cons
Pros
- Striking and unusual dark flower color.
- Long flowering period from summer to autumn.
- Excellent drought tolerance.
- Suitable for containers and coastal gardens.
- Award-winning cultivar for horticultural merit.
Cons
- May require overwintering protection in colder climates.
- Can take a season to establish fully for maximum bloom.
- Requires well-drained soil to prevent root rot.
Setup, Compatibility & Care
Planting:
- Choose a location with full sun exposure.
- Ensure the soil is well-draining. Amend heavy clay soils with grit or compost.
- Plant the 9cm pots so the top of the root ball is level with the soil surface.
- Water thoroughly after planting.
Compatibility:
- Soil: Prefers well-drained soil. Tolerates a range of soil types but dislikes waterlogging.
- Climate: Hardy in milder climates. In areas with hard frosts, it benefits from winter protection, such as mulch or moving pots to a sheltered location.
- Companions: Pairs well with ornamental grasses, salvias, and other drought-tolerant perennials.
Care:
- Watering: Water regularly during the first growing season. Once established, it is highly drought-tolerant but benefits from watering during prolonged dry spells.
- Feeding: Apply a balanced liquid fertilizer in spring and early summer to encourage flowering.
- Pruning: Deadhead spent flower stalks to encourage reblooming and maintain a tidy appearance. Cut back dead foliage in late autumn or early spring.
- Pest & Disease: Generally pest and disease-free, but watch for slugs and snails on new growth.