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Mushroom Windowsill Kit - Shiitake

Various Pack Sizes

FROM £16.99
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58% (11 Reviews)
  • Everything you need to grow your own mushrooms in one box
  • Enjoy 3 or more pickings
  • Choose your favourites from a range of 4 different kits
1 1 x 3 Litre Mushroom Kit

Buy 2 or more packs of 3 litre mushrooms and save £2.50 a pack

Despatch Within 24 Hours
12 1 x 7.5 Litre Mushroom Kit
Despatch Within 24 Hours
Flowering Period
Harvesting Period
Flowering Period
Harvesting Period

Mushroom Windowsill Kit – Shiitake Mushroom

Grow handfuls of Shiitake mushrooms from your very own windowsill.

Our Windowsill Mushroom Kits will allow anyone to grow Shiitake mushrooms from their very own windowsill. Handfuls of these delicious mushrooms will be just clutches away from your favourite dish. Shiitake is an attractive variety from the mushroom family. An intense taste when raw but, when cooked they are loved for their umami flavour. Shiitake mushrooms are completely versatile and make a great addition to vegetarian dishes with an Asian cuisine twist.

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.


3 Litre = 17.5cm (7") x 27.5cm (11") x 8cm (3½") depth.

7.5 Litre = 32cm x 26cm x 12.5cm

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 with a substrate of sawdust.
If you see any white/brown bumpy growths, these indicate early mushroom fruition. These bumps will later become the shiitake mushrooms.

1. Cultivation: Remove the substrate from the plastic bag and immerse the substrate in a bucket filled with cold tap-water for 24 hours. Lay a heavy object on top of the substrate to keep it under water. After 24 hours place substrate in the tray and cover with transparent lid.
Please note: if mushrooms are already growing on the substrate, you may skip the immersion step.

2. Place kit in daylight, ideally on a windowsill facing north at a temperature of + 15°C. Wait until + 50% of the surface has turned brown. During this time, keep the kit covered with the transparent lid.

3. Spray the cultivation substrate at least once a day with a plant spray to prevent it from drying out.

4. Harvesting: The harvest period is around one week and the fully-grown mushrooms have a cap diameter of 4–8cm.

5. After a harvest, let the substrate rest for at least 15 days. During this rest period, take the kit from the windowsill and keep it in a place which is neither too dry, or too hot (a cellar is ideal).

6. After this period, repeat the cycle, starting at point 2. The second harvesting period arrives after 5–10 days. During a period of maximum 6 months, you may have 5 to 8 harvests.

Flowering Period
Harvesting 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.

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

Delivery Charge

Standard Charge

Packet seed only will incur a carriage charge of £2.99.

All other products incur a carriage charge of £6.99.

If your order comprises of a combination of carriage charges then a combined carriage charge of £7.99 will be applied.

Live Plants

Suttons strives to ensure that all its plants are delivered to you in the perfect condition for planting. While the majority of our nursery plants cope well with slight delays in intransit, sadly, the time it takes to deliver to certain locations in the UK means that we can't guarantee this for some of our smaller plug products and tender bedding and vegetable lines, which do not respond well to the extra journey time. So regretfully while we offer the majority of our live plant offering nationwide, we are unable to ship plugs, begging plants and tender vegetable plants to the following areas: HS, IV41-IV49, IV51, IV55-56, KW15-KW17, PA34, PA41-48, PA60-PA78, PA80, PH40-PH44, TR21-TR24, ZE1-ZE3.

Non Standard Deliveries

Unfortunately like many companies in our industry we are currently only able to supply orders to UK based customers, excluding those in Northern Ireland. We are committed to finding a way that we can resume or normal services again as soon as possible. Please accept our apologies for any inconvience caused.

Very Large items

If ordering any large items marked large lorry items  a surcharge of £5 per item will be applied. These items are also not available to areas and postcodes shown under non standard deliveries. We may need to contact you regarding delivery so please provide a contact number with all orders.

Prices include VAT where applicable.

We reserve the right to contact you and advise an additional charge where necessary and are happy to quote for carriage of specific products to more remote areas. Some items may not be available to all areas.

We reserve the right to revise any carriage charges in the event of carrier price increase or other unforeseen circumstances. We will always advise of the carriage charge 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.

Unlike many companies, we publish all of our reviews - good or bad - to give you, the customer, total transparency and peace of mind.

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