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Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1 Onion Seeds 'Fasto' F1 Onion Seeds 'Fasto' F1 Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1 Onion Seeds 'Fasto' F1 Onion Seeds 'Fasto' F1 Onion Seeds 'Fasto' F1 Onion Seeds 'Fasto' F1 Onion Seeds 'Fasto' F1

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Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1
Onion Seeds 'Fasto' F1

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Onion Seeds 'Fasto' F1

Allium cepa

Onion Fasto F1 is a top-performing onion that’s quick to mature and easy to grow. It produces a generous crop of uniform, golden-skinned bulbs with great flavour and texture. These onions are perfect for storing right through winter-they can last up to six months in the right conditions, making them a great choice for home-growing with reliable results. They’re also popular with growers who like to enter their onions at shows, thanks to their neat, consistent shape.

Marshalls Garden

350 Seeds

10202436

Currently Out of Stock

More due between 21st and end of December

£2.99

Fast Delivery – Next Day Despatch Seed Only Delivery From £2.99* | Learn More

Fast Delivery – Next Day Despatch Seed Only Delivery From £2.99*

Seed Only orders £2.99 delivery when buying 3 or more.

Less than 3 seed packet only orders will require £6.99 delivery charge. Buy 3 or more Seed Packets and receive discounted delivery at £2.99.

When showing as 'In Stock' on the website product page, products are dispatched next day by our expert team  of placing your order, (Sunday to Friday).

To ensure your seeds arrive in the freshest condition and undamaged, they are carefully packed in specially designed, fully recyclable packaging.

For larger seed orders we use Yodel express delivery to ensure you receive your package within 3 days of placing your order with the addition of it being fully tracked for your peace of mind.

 

Key Features

Marshalls Garden

High Yield

Marshalls Garden

Hardy

Marshalls Garden

Low Maintenance

Marshalls Garden

Enhanced

Product Information

Eventual Height:

30cm

Position:

Full Sun

Suitable for:

Pots, Window Sill, Patio, Small Gardens, Borders, Vegetable Plot, Window Boxes, Raised Bed

Plant Type:

Annual

Soil Type:

Loose, free-draining, rich in organic matter, pH 6.0-7.0

Complete The Job

Growing Calendar

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sow Indoors

Sow Indoors

Sow Outdoors

Sow Outdoors

Harvest

Harvest

  • Approx. 350 Fasto F1 hybrid seeds – uniform, high-quality results

  • Early maturing with neat, golden-skinned bulbs ideal for storing

  • Smart, reliable shape and finish – ideal for showing and kitchen use

Fasto F1 is a steady performer, even when the weather isn’t ideal!

These onion seeds produce neat, uniform bulbs that cure well and keep their shape. The golden-skinned onions have a reliable flavour, whether you’re cooking fresh or using stored bulbs.

This variety grows well in vegetable beds, garden borders, or allotments and doesn’t require much fuss.

It’s early maturing, so you can harvest early and free up space for other crops. Fasto F1 onions also store well—they'll keep up to six months when kept in a cool, dry place.

Fasto F1 is a no-nonsense onion seed variety that delivers quality, flavour, and easy growing for home gardeners and allotment growers alike.

How To Grow

Onions are a staple crop for any home gardener and one of the most rewarding vegetables to grow from seed. Whether in large garden beds or patio containers, they thrive with just a little care. From sweet and red onions to spring onions and shallots, each type adds its own unique flavour to the kitchen. Start seeds indoors early for a strong head start and choose a sunny, well-drained spot for planting. Keep soil moist but not waterlogged for the best growth.


Indoor Sowing
Fill a half seed tray with fine-textured seed compost and lightly scatter seeds across the surface without overcrowding. Cover lightly and keep moist. A heated propagator or heat mat provides consistent warmth, encouraging quick germination and strong root growth.


Planting Out
Transplant seedlings 1cm deep, spacing 10cm between plants and 30cm between rows. Rotate crops each season to avoid soil-borne pests and diseases, and avoid planting onions or related crops (leeks, garlic, shallots) in the same spot more than once every 3–4 years.


Interplanting
Onions store well, so one sowing is usually enough. Use the spaces between rows to grow carrots, cabbages, or lettuce. Their strong scent naturally deters pests like carrot flies and aphids. Companion herbs such as mint and parsley also help keep onion flies away.


Why Marshalls Garden

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Discover our wide range of gardening guides developed over 75 years, showcasing our commitment to gardening.


Contact us Mon – Fri and even on bank holidays (because gardening queries don't follow a calendar), to discuss our product range or chat about all things gardening.


When you order from us, expect promptness. 'In stock' plants and seeds are dispatched within two working days. And because we're as green as our thumbs, all our packaging is recyclable.


Our trustworthiness isn't just us talking. It's thousands of five-star reviews on Trustpilot and a 100% happiness guarantee on all our products. We're not just here to sell, we're here to sow trust.

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