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Sustainable soil for happy houseplants. Made in Yorkshire.

Home » Allgood Farm Shop » Indoor Begonia Soil

How much do I need?

Recommended Size	Approx. Pot Diameter
1 litre	Up to 11cm / 4in
3 litres	11cm to 14cm / 5.5in
5 litres	14cm to 20cm / 7.8in
10 litres	20cm to 28cm / 11in
15 litres+	Proper big pots!

How big are the boxes?

Volume	Box
1 litre	24cm x 32 cm x 2cm
3 litres	27cm x 27cm x 7cm
5 litres	27cm x 27cm x 11cm
10 litres	30cm x 30cm x 16cm
15 litres	24cm x 30cm x 24cm
2 x 15 litres	45cm x 30cm x 30cm

How long does it take to deliver?

We aim to process orders within 2 working days (Monday to Friday).
We post for free by Royal Mail 48hr Tracked delivery as standard.
1L mixes are dispatched in letter-box friendly packages, other sizes will not fit a standard letter-box.
Heavier (over 4kg) items may be sent using other couriers.
Expedited delivery is available at checkout for an additional cost.

Allgood Farm Begonia expert potting soil mix

A rich, mossy and moisture-balanced blend carefully designed to work well with the roots, tubers and rhizomes of all begonia varieties.

Includes free standard shipping!

Please note: we regret that we are unable to ship to Northern Ireland.

How much do I need?

Recommended Size	Approx. Pot Diameter
1 litre	Up to 11cm / 4in
3 litres	11cm to 14cm / 5.5in
5 litres	14cm to 20cm / 7.8in
10 litres	20cm to 28cm / 11in
15 litres+	Proper big pots!

How big are your boxes?

Volume	Box
1 litre	24cm x 32 cm x 2cm
3 litres	27cm x 27cm x 7cm
5 litres	27cm x 27cm x 11cm
10 litres	30cm x 30cm x 16cm
15 litres	24cm x 30cm x 24cm
2 x 15 litres	45cm x 30cm x 30cm

How long does it take to deliver?

We aim to process orders within 2 working days (Monday to Friday).
We post for free by Royal Mail 48hr Tracked delivery as standard.
1L orders are dispatched in letter-box friendly packages, other sizes will not fit a standard letter-box.
Heavier (over 4kg) items may be sent using other couriers.
Expedited delivery is available at checkout for an additional cost.

🌸BEST FOR BEGONIAS: Our soil mix has been expertly designed to give the best moisture, aeration and nutrient balance for your indoor Begonias, keeping roots and rhizomes healthy while boosting lush & leafy growth.

🌿 PACKED WITH NUTRIENTS: We charge our soils with rich organic compost and worm castings for a potent blend of slow and quick-release nutrients and minerals, supporting long-term plant health.

🐛 BOOST HEALTHY GROWTH: Orders of 3L or more come with a free sample of our home-grown nutrient boost.

💚 KEEP IT GREEN: Allgood Farm products are peat-free and delivered in recyclable packaging.

Please note: we regret that we are unable to ship to Northern Ireland.

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What soil works best for Begonias?

Our indoor begonia soil mix is crafted to keep these humidity-loving, slightly finicky plants thriving by giving them exactly what their roots need. Begonias prefer a light, airy substrate that holds moisture without becoming heavy or waterlogged, so we’ve built a blend that balances organic matter for gentle hydration with chunky, free-draining ingredients that prevent rot.

Our blend uses plenty of pine bark and Welsh sphagnum moss, and includes nutritious compost and worm castings that support lush foliage and vibrant blooms, releasing steadily to avoid overwhelming their sensitive roots.

These ingredients, along with a good dose of expanded clay, biochar and perlite provide structure, gentle nutrition, and a thriving microbiome that supports long-term plant health.

We think your begonias will love this new soil recipe – let us know how they get on!

Our Begonia soil mix is designed to work with all varieties, including:

What soil works best for Begonias?

These ingredients, along with a good dose of expanded clay, biochar and perlite provide structure, gentle nutrition, and a thriving microbiome that supports long-term plant health.

We think your begonias will love this new soil recipe – let us know how they get on!

Our Begonia soil mix is designed to work with all varieties, including:

basic garden compost — See the difference for yourself! Allgood Farm Begonia soil is rich in nutrients, structure and texture.

See the difference for yourself! Allgood Farm Begonia soil is rich in nutrients, structure and texture.

What makes Allgood Farm’s soil mixes different?

We believe our mix is the best soil for Begonia thanks to the high-quality and sustainable ingredients we use.

In the mix: expanded clay pebbles, British pine bark, perlite, coco coir, sphagnum moss, organic compost, worm castings, raw biochar

Learn more about our soil ingredients >>

Unlike your run-of-the mill garden centre potting soil, our specialist soil mixes are designed to recreate the natural habitat of your individual plants. That means a lot more goes into them than just compost!

We pack Allgood Farm repotting soils with varied ingredients to reproduce natural soil structure, aeration and moisture balance, with each mix tailored to a specific plant or family of plants. Our soils contain wholesome natural additions like pine bark (from sustainable British forestry), sphagnum moss (hand harvested in Wales), expanded clay (we use various grades and shapes chosen for each mix), and many others.

Our soils are also boosted with bioactive worm castings, a rich compost full of nutrients, which helps to keep your soil’s microbiome healthy.

Allgood Farm soils are natural, living products – we never bake them or add pesticides – because sterile soil is dead soil!

How to get the best results with Allgood Farm Begonia soil

Allgood Farm soils are living products – free from pesticides and naturally alive with a beneficial microbiome.

Learn more about living soil >>

Most indoor Begonia varieties will tolerate being a little pot bound, so it’s best to repot fairly infrequently – usually every 2-3 years is fine.

Spring is the best time, and we recommend watering the pot well a day or two beforehand to help mitigate transplant shock. Once repotted water lightly – don’t drench it.

Allgood Farm soils are rich in organic matter – that’s what makes them so nourishing for your plants! But what’s good for your plants is also nourishing for other things – namely, fungi and bugs.

The odd appearance of a random plant pot mushroom is known to be a sure sign of healthy, nutrient-rich soil. However, fungus can sometimes be a sign that your soil is being kept too moist, and this may attract the dreaded fungus gnat.

For most plants, we highly recommend watering from the bottom, ensuring the top of the soil doesn’t stay damp – this will greatly reduce any chance of infestation as well as helping to avoid root rot.

Also consider a pot-topper – a layer of grit or bark that will look nice and help keep any nasties from your soil.

How much Begonia soil do you need?

terracotta pots of 4.5 inch diameter holds 1 litre, pot of 12 inch diameter holds 10 litres

We like to give you a range of options when buying soil as we know not everyone has the space or budget to buy a big bag, especially if you’re only repotting one small plant.

Our 1-Litre pouches hold just enough to fill a typical small terracotta plant pot of up to 4.5 inches (11.5cm) diameter.
A 3-litre bag should fill a pot of up to around 6″ (15cm) diameter.
A 5-litre bag should fill a pot of up to around 8.5″ (22cm) diameter.
A 10-litre bag should fill a pot of up to around 12″ (30cm) diameter.

Like most products, you get more for your money when you order a larger quantity, as the overall shipping, packaging and labour costs are reduced. Please consider whether the price and volume you’ve selected is right for you before you buy.

Please note: Allgood Farm Begonia soil is sold by Volume (Litres) not by Weight (Kilos).

This is the standard way to sell soil because you need to know how big a pot you can fill with it, not how much it weighs. Your kitchen scales might have a ‘Litre/ml’ setting but this is calibrated for the weight of water and can’t accurately ‘weigh’ a litre of any other material.