White button mushroom growing kit – diagram of how the inoculated substrate works

White button mushroom kit three-quarter view – self-contained grow bag for kitchen or cellar

White button mushroom kit top view – opening to start fruiting

White button mushroom kit side view – compact format for indoor cultivation

White button mushroom kit main view – grow your own mushrooms at home in 2-3 weeks

2 button mushroom grow kits, white and brown

Name: 2 button mushroom grow kits, white and brown
Brand: Hawlik
SKU: 73bc8d50-ff2b-4e5e-9a45-8a3045e6d70b
Price: 56.9 EUR
Availability: InStock

56,90 €

18,96 € × 3 with no fees Klarna.

This set contains two button mushroom kits, one of white mushrooms and one of brown, on a grow medium already colonised by mycelium. The mushrooms form between 12 and 18 °C, without light, in a cellar, a garage or a utility room.

The first harvests come 3 to 6 weeks after setting up. Delivery is to France and Germany only.

Ref. 73bc8d50-ff2b-4e5e-9a45-8a3045e6d70b·Mushroom growing kit

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The summary

What you receive: two ready-to-start cultures, one of white mushrooms and one of brown.
Where to put them: in a cool room between 12 and 18 °C, with no need for light.
When to harvest: first mushrooms 3 to 6 weeks after start-up, then 3 to 5 flushes.
Before you begin: start the culture within a week of delivery.

Colonised grow medium, white and brown, that fruits without light at 12 to 18 °C

This set of two button mushroom growing kits, one white and one brown, provides a grow medium already colonised by mycelium, ready to start. It fruits without light, between 12 and 18 °C, in a cellar, a garage or a pantry. The first harvests arrive 3 to 6 weeks after setting up.

This set brings together two button mushroom cultures, one of white mushrooms, the other of brown mushrooms. Each box contains a grow medium already colonised by the mycelium: you get it started, keep it damp and cool, and the mushrooms form after a few weeks, in a cellar, a garage or a pantry.

The grow medium

It is already seeded with mycelium, the network of filaments that produces the mushrooms.

The covering soil

It covers the grow medium at the start of the crop.

The film cover

It covers the growing carton while the mushrooms develop.

🌡️ Cool, damp, no light

Button mushrooms form between 12 and 18 °C, and light plays no part in growing them. A cellar, a garage or a pantry therefore make better locations than a kitchen, where the temperature often exceeds this range and where dry air dries out the casing soil. Keep this soil damp without soaking it, by spraying water rather than pouring it, and check the room temperature before setting up the boxes there.

Check the cellar before putting the boxes down there

A digital thermometer and hygrometer left in the room for a few days tells you whether it stays between 12 and 18 °C, night and day. It also shows the humidity of the air, which indicates how quickly the casing soil will dry out. You can thus choose the location based on figures, before the crop spends 3 to 4 months there.

One week to start the culture

Start the cultures no later than one week after receiving them. If you have to wait, keep them between 2 and 10 °C, where they keep for 3 to 4 weeks.

📋 Getting started

Cultivation begins in the warm. Spread the casing soil over the grow medium, close the box and leave it in a heated room of the house for 1 to 3 weeks. During this phase, the mycelium leaves the grow medium and colonises the casing soil. This layer does not feed the mushrooms, which draw on the grow medium, but it retains the moisture they need to form, and it is on its surface that the first mushrooms appear.

You then take the lid off the box and slide it to one side, standing upright in the crate, where it acts as a spacer to hold up the film cover: the whole thing forms a mini greenhouse over the crop. The box then goes somewhere cool, between 12 and 18 °C. Each day, you lift the cover for 5 minutes to refresh the air, and you mist the soil if the surface dries out.

🟤 White or brown

Both varieties are grown in exactly the same way. The brown mushroom has a reputation for a slightly stronger flavour and a firmer flesh than the white, and both are cooked in the same manner. You can start both boxes at the same time to compare them, or stagger their start by a few weeks to harvest for longer, since each crop produces for 3 to 4 months.

🍄 Harvesting and storage

The first mushrooms can be picked 3 to 6 weeks after start-up, and the crop then produces in 3 to 5 successive flushes spread over 3 to 4 months. Pick each mushroom when its cap is just beginning to open, detaching it with a gentle twisting motion rather than pulling, so you don't tear out the neighbouring mycelium. Across all the flushes, the batch yields on average around 3 kg of mushrooms, which keep for 5 days in the fridge and freeze well, ready for your kitchen garden recipes.

The parcel contains the two growing boxes, one of white mushrooms and the other of brown, each with its grow medium seeded with mycelium, its casing soil and its film cover, along with the growing instructions. The whole package weighs about 8 kg. Grown indoors all year round, these mushrooms complement what your seeds and seed trays provide in season, and producing part of your own food at home ties in with the question of food self-sufficiency.

Technical specifications

Crops

Varieties: White and brown button mushrooms
Growing temperature: 12 to 18 °CA cellar, a garage or a utility room suits better than a heated room.
Light: None required
First harvest: 3 to 6 weeksCounted from start-up, then 3 to 5 waves over 3 to 4 months.

Pipework and parcel

Warm phase: 1 to 3 weeksCasing soil spread out, box closed, indoors.
Setting up the culture: Within 1 weekThe cartons can also be kept for 3 to 4 weeks at between 2 and 10 °C.
Average harvest: Around 3 kg for the lot
Parcel: 45 × 34 × 19 cm, 8 kg

In the box

2 growing cartons, one of white mushrooms and one of brown mushrooms
2 mycelium-inoculated grow mediums, with their casing soil and film cover
1 set of growing instructions

Temperatures, lead times, yield, stages and carton composition: values from the producer Hawlik, recorded on 21/09/2026 and 11/10/2026. Lead times and yield are approximate figures.

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Plant or living organism: this product is excluded from the right of withdrawal (article L221-28, 4° of the French Consumer Code), as it deteriorates quickly.

Frequently asked questions

8 questions

6 key questions, 8 in the detailed view

Do mushrooms need light?

What does each box contain?

Component	Role
Inoculated grow medium	It carries the mycelium that produces the mushrooms
Casing soil	It covers the grow medium
Film cover	It covers the crop during growth

How long should you allow?

Where should you install the crops?

When should you harvest?

Can you harvest several times from the same tray?

Why one tray of whites and one tray of browns?

How should you store the mushrooms you have picked?

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2 button mushroom grow kits, white and brown

The summary