Marshalls Garden Calabrese Marathon F1 Seeds
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The RangeMarshalls Garden Calabrese 'Marathon' F1 Seeds - Rhs Agm, High-Yield - Green
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Product Information
Full details
Marshalls Garden Calabrese Marathon F1 seeds are an excellent choice for home gardeners seeking a reliable, high-yielding broccoli variety that holds an RHS Award of Garden Merit. Ideal for both experienced growers and beginners, this vigorous plant produces dense, turquoise heads that are rich in vitamins and iron, though users should be prepared for a 13-week growing cycle from the time of sowing.
All features
| Model Part Number | Marathon F1 |
|---|---|
| Brand | Marshalls Garden |
Extended Product Information
FAQs
When is the best time to sow Marathon F1?
You can sow in spring for a summer harvest or in summer for an autumn harvest.
Can I grow these in containers?
While possible, you need a large, deep container (at least 30-40cm diameter) to provide enough space for the plant's root system.
How many seeds are in a packet?
Each packet contains approximately 30 seeds.
How long does it take to mature?
Typically, the plant is ready for its first harvest approximately 13 weeks after sowing.
Why did my broccoli turn yellow after picking?
This is often due to heat stress or if the head was harvested past its prime maturity point.
Is this variety good for beginners?
Yes, as an F1 hybrid with an RHS Award of Garden Merit, it is specifically selected for high vigor and reliability.
Troubleshooting
Slow growth or yellowing leaves
This often indicates a nitrogen deficiency; apply a balanced organic fertilizer or high-nitrogen plant feed.
Premature flowering (bolting)
Ensure the plant is not being exposed to extreme heat stress and maintain deep watering to keep root temperatures stable.
Pest damage to leaves
Use horticultural fleece or fine netting to physically protect the plants from caterpillars and cabbage root flies.
Pros and Cons
Pros
- High reliability and disease resistance common to F1 hybrids
- Extends the harvest period through secondary side-shoot production
- Versatile for both summer and autumn harvesting schedules
- Thrives in various soil types including heavy and light soils
- Excellent flavor profile and nutritional value
Cons
- Requires a 13-week maturation period
- Requires consistent full sun exposure for optimal development
- Single packet contains limited seeds (approx. 30)
- Not suitable for indoor container gardening without significant space
Setup, Compatibility & Care
To ensure success, select a location in your garden that receives full sun throughout the day. Prepare the soil by incorporating organic matter to provide the necessary nutrients for this heavy-feeding crop.
- Sowing: Plant seeds at a depth of roughly 1cm, spacing plants at least 45cm apart to allow for proper air circulation.
- Watering: Maintain consistent soil moisture, especially during dry spells, to prevent the plant from becoming stressed.
- Maintenance: Regularly inspect for common brassica pests like cabbage white butterflies.
- Harvesting: Cut the central head while the beads are still tight and firm; wait too long, and the beads may start to open and lose their quality.