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Delivery from £1.99
Over 25,000 5 Star Trustpilot Reviews
Royal Warrant Holders

Mushroom Windowsill Kit - Oyster

1 Kit


  • Grow handfuls of Oyster mushrooms from your very own windowsill.
  • Delicious mushrooms will just be clutches away from your favourite dish.
  • Subtle in flavour and smooth in texture, a great addition to Asian cuisine.
  • These mushroom kits are perfect for full-time gardeners or beginners.
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Mushroom Windowsill Kit – Oyster

Our Windowsill Mushroom Kits will allow anyone to grow Oyster mushrooms from their very own windowsill. Handfuls of these delicious mushrooms will be just clutches away from your favourite dish.

Oyster mushrooms are an attractive variety of the mushroom family. A smooth texture and subtle flavour when cooked, these mushrooms are completely versatile and mild making them a great addition to any Asian cuisine.

Mushrooms are tasty, low in calories, high in protein and a great source of fibre especially for those on plant-based diets. They provide you with vital vitamins including vitamin B, selenium, potassium and copper. With our handy kits, you’ll soon have this delicious and health beneficial vegetable at just the fraction of the cost.

Whether you’re a full-time gardener or beginner, this handy kit includes a base tray, lid and pre spawned substrate and easy to follow instructions.

Planting and care: 

Simply keep them moist and out of direct sunlight and your first crop should be ready to pick in a matter of weeks, plus you can expect at least another 2 pickings after that (See full instructions in Growing Info below).

These kits need to be started on receipt and are unsuitable for storage. If this purchase is intended as a Christmas gift please order 246530.

Dimensions: 17.5cm (7") x 27.5cm (11") x 8cm (3½") depth.

Growing Information

Full growing instructions included.

Always wash your hands before you handle any of the kits to avoid bacteria contaminating the substrates and development of other moulds.

The kit contains a base tray, plastic lid and a plastic bag containing a “spawned” substrate.

When opening the kit, check if the substrate has grown completely white, otherwise cover
the base tray with the plastic lid and store for 10–14 days at 20–25°C. Make sure that you
leave the plastic bag around the substrate.

1. Cultivation: You start the cultivation process by making five 2-3cm incisions/slits in the plastic containing the substrate. Then water the substrate with ¼ litre of water, so that the surface is moist then leave the set with the plastic lid on at a temperature of 20-25°C.

2. After around 2 weeks, white pins appear, now put the kit in a room where daylight enters, at a temperature of 10–15°C but not in direct sunlight.

3. Make sure that the surface of the substrate never dries out. Moisten at least once a day with a plant spray making sure it does not become too wet. From the white pins, small stems with
grey dots appear, the so-called “cluster”. Continue to spray the mushrooms daily to prevent them drying out during fruiting.

4. Harvesting: total harvesting time may extend to three months. A cluster must be pulled out from the substrate with a turning movement, making sure that no part of flesh remains in the substrate.

Before consumption, trim the mushroom 1cm below the gills. The stems, which are slightly
tougher, can be used to make a sauce or soup.

Now the cycle repeats itself at point 3. 

You may harvest 3 times from the set. Before each harvest run, make 5 new incisions/slits
in the plastic.

Good luck and bon appetit!

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sowing Period
Planting Period
Harvesting/Flowering Period
Order Despatch

Orders are despatched promptly by post or parcel carrier. Seasonal items such as plants are sent separately with the estimated delivery times stated against each variety both in our catalogue and on our website.

Small items are sent by Royal Mail and larger items by courier. When ordering large items please provide your phone number so that the courier can contact you if necessary.

Please note that when several items are ordered they may not all be delivered at the same time.

Delivery Charge

Standard Charge

Packet seed, garlic, onion sets, shallots and mushroom spawn (except windowsill kits) incur a carriage charge of £1.99.

All other products incur a carriage charge of £4.99.

If your order comprises of a combination of carriage charges then the higher carriage charge will be applied.


Northern Ireland, Channel Islands, Isle of Man and Isles of Scilly & areas of Scotland with postcodes starting AB30 plus, BT, GY, HS, IM, IV1 plus, JE KA27, KA28, KW1 to KW16, PA20 to PA38, PA41 to PA80, PH10 to PH40, PH42 to PH50, TR21 to TR25 and ZE: For orders weighing less than 2kg standard charge applies. Where the weight of the order is 2kg to 10kg the carriage charge is £9.99. Where the weight of the order is over 10kg the delivery charge is £14.99

Orders to the Isle of Wight and Isle of Scilly: For orders weighing less than 2kg the standard charge applies. Where the weight of the order is 2kg and above the carriage charge is £14.99.

Republic of Ireland: For orders weighing less than 2kg the standard charge applies. Where the combined weight of the order is 2kg and above, the carriage contribution is £14.99.

EU countries: We can only deliver packet flower and vegetable seed to EU countries. The delivery charge is £4.99 per order.

We reserve the right to contact you and advise an additional charge where necessary, and are happy to quote for carriage specific products to outlying areas.

Some very large items may not be available to all areas.

large lorry items Indicates large/heavy items or boxed plants which incur a surcharge.

Prices include VAT where applicable.

We reserve the right to revise our delivery charges in the event of carrier price increases or other unforeseen circumstances. We will advise you of any increased carriage charges before payment is taken.

All Suttons products should reach you in perfect condition, just as they left us. If you are dissatisfied in any way with their condition on arrival, please let us know within 14 days. We are only liable for the cost of the goods as quoted on the website plus the cost of delivery if the goods are faulty.

Customer Reviews

Mushroom Windowsill Kit - Oyster

Mushroom Windowsill Kit - Oyster

1 Kit


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