Call us today: 0333 400 0033 Calls cost no more than the national rate including calls from mobiles

100% Satisfaction Guarantee

Track Your Order

Award Winning Varieties

Voted Best Online Retailer

Our Customers Rate Our Excellent Service

Home>Vegetables>Vegetable Seeds>Onion & Leek Seeds

Spring Onion 'Sentry' - SowStrong® CollectionAllium cepa

Just £2.49

Description Sowing More Info Delivery
This upright, dark stemmed spring onion is ideal for sowing closely for high yields of delicious, full flavoured stems. When sown every 4 weeks, Spring onion 'Sentry' will provide good yields throughout summer. Absolutely delicious in sandwiches and salads. Height: 30cm (12"). Spread: 5cm (2").
Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

Useful links:

Read more on our blog: SowStrong® - A Natural Way to Growing Success

Patio, Kitchen Garden


Full sun

30cm (11.8in)

5cm (2in)

Sowing Months Harvest Months
Spring onions are undemanding and require only occasional watering during particularly dry periods. However, rows should be weeded regularly. Harvest spring onions by pulling up individual stems 6-8 weeks after sowing.

The layers of micronutrients and microelements, essential for plant growth, make SowStrong™ ideal for all soil types. These encapsulated seeds require moist soil conditions at sowing time for optimum emergence.

Direct sow spring onions outdoors from March to July. Specific overwintering varieties may be sown in late summer under cloche protection for an early spring crop. Grow spring onions on any firm, well drained, fertile soil in full sun. Sow thinly in rows at a depth of 1cm (1/2") and a distance of 30cm (12") between rows, and cover lightly with soil. Cover with a protective netting or fleece to prevent attack from birds and insects. Spring Onions will not require thinning. Sow Spring Onions every 3 weeks for an ongoing supply throughout summer.


Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes etc are delivered at the appropriate time for planting and will be stated on the product page or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £1.95.

Orders which include any other products will incur a delivery charge of £4.95.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.90 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details and details of any surcharges that may apply to certain destinations.

Satisfaction Guaranteed

For your complete peace of mind, our Home and Garden products may be returned to us within 30 days of purchase for a refund of the purchase price. Items must be returned unused, at your cost and in mint condition. All items carry a manufacturer's 12 month defects warranty.