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Suppliers of Mail Order Vegetable Seeds

Welcome to our Mammoth Onion website

Vegetable Seeds and Plants may be ordered by phone, by post or now you can order on line direct from this site. The seeds can be sent to all countries, vegetable plants are only available to customers within the UK.

Postage charges will be added at checkout.

Why not visit the nursery, you will find our opening times on the At the Nursery Page page. We have one of the largest ranges of vegetable plants in the UK.

Come and talk vegetables! We shall be staging exhibits at the horticultural shows listed below.

Aerial view of the nursery

Visit Us At The Following Shows In 2020
Potato Weekend at the Nursery Nursery – with ‘Pop Up Cafe’ February 1 st – 2 nd 10:00am to 3:00pm
RHS Chatsworth Show June 5 th – 9 th
BBC Gardeners World Live June 18 th -21 st
RHS Tatton Park Show July 22 nd – 26 th
Chorley Show August 1 st – 2 nd
Southport Flower Show August 20 th – 23 rd
Harrogate Autumn Show September 18 th – 20 th
RHS Malvern Autumn Show September 26 th – 27 th

W. Robinson & Son (Seeds & Plants) Ltd,
Sunny Bank, Forton Nr. Preston,
Lancs PR3 0BN

©2015 Robinsons Seeds (Mammoth Onion)
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W. Robinson and Son are suppliers of mail order vegetable seeds, often of their special mammoth variety of vegetables and specialist seed supplier

Mammoth Russian Sunflower

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Item Details

One of the oldest and most popular sunflower varieties available. Towering 12′ plants with huge heads supported by massive trunks. Use to attract pollinators, turn heads in the neighborhood, roast for eating, or feed wildlife throughout winter. Grey striped seed. Annual, 90 days.

Learn to Grow Mammoth Russian Sunflower

Direct Seed: 6″ Apart

Direct Seed: 1/2″ Deep

Germination: 10-14 Days

Rows Apart: 24-36″

Instructions – Sow seeds outdoors after last frost. Sunflowers prefer full sun to light shade and well-drained rich soil. Provide support for tall plants.

One of the oldest and most popular sunflower varieties available, the Mammoth Russian sunflower grows as towering 12′ plants with huge heads supported by massive trunks. Grey striped seed.