Peat Moss and Perlite Seed Raising Mix 80L: Fine 50/50 Seedling and Propagation Mix

Peat Moss Seed Raising Mix: A Fine, Free-Draining Mix for Seeds and Cuttings

This seed raising mix is a fine 50/50 blend of peat moss and perlite, made for sowing seeds in trays and punnets, striking cuttings and pricking out seedlings. The peat moss holds moisture evenly around germinating seeds while keeping a fine, loose texture, and the perlite keeps the mix open so air reaches young roots and extra water drains away. Also known as a seed starting mix or seedling mix, it suits vegetables, flowers and herbs, and comes in an 80L bag for regular propagating or a 10L bag for smaller jobs.

Why Peat Moss and Perlite Work for Seedlings

• Peat moss: absorbs and holds water evenly, so fine seeds don't dry out between waterings, and its soft texture lets tiny roots push through easily.
• Perlite: expanded volcanic glass that adds air pockets and drainage. It doesn't break down or compact, so the mix stays light.
• Soil-free: with no garden soil in the mix, there are far fewer weed seeds and soil-borne problems than in garden soil or recycled potting mix.

The high 50% perlite content makes this one of the more free-draining seed raising mixes, which helps reduce damping-off, the fungal problem that collapses seedlings at soil level when the mix stays too wet.

Seed Raising Mix vs Potting Mix

A potting mix for seedlings needs to be different from a mix for established plants. Standard potting mix is coarse, often contains bark chunks and slow-release fertiliser, and can be too rich and lumpy for small seeds. Seed raising mix is finer and lighter, holding moisture in close contact with each seed so germination is quicker and more even. Once seedlings have a few true leaves, move them into potting mix or garden beds for longer-term growth.

Pre-Moisten Before Sowing

Dry peat moss repels water at first, so water can run straight through a dry tray. Before filling trays, tip some mix into a bucket, add warm water a little at a time and mix with your hands until it's evenly damp, like a wrung-out sponge. Moist mix fills trays evenly, settles properly and gives seeds steady moisture from the start.

How to Sow Seeds in Seed Raising Mix

• Fill clean trays, punnets or cells with pre-moistened mix and press lightly to level.
• Sow seeds at the depth shown on the seed packet. Very fine seeds can be pressed onto the surface.
• Cover lightly with a sprinkle of mix if the packet says to.
• Water gently with a fine mist or stand trays in shallow water to soak up from below.
• Cover with a clear lid or plastic to hold humidity until seeds sprout, then remove it.
• Keep the mix moist but not soggy, in a warm, bright spot out of harsh sun.
• Feed with a weak liquid fertiliser once the first true leaves appear, as peat and perlite contain few nutrients.

Using It as a Plant Propagation Mix

The same open, moist structure makes this a useful plant propagation mix for cuttings. Insert dipped cuttings into pre-moistened mix, firm around them and keep humidity up with a cover. The perlite helps prevent the cut stem rotting while roots form.

Perlite, Vermiculite or Coir?

Perlite keeps a mix airy and fast-draining. Vermiculite holds more water and suits seeds that like constant moisture. Coco coir is a peat alternative with a similar moisture-holding role. A 50/50 peat and perlite blend sits at the free-draining end, which suits most vegetables, herbs and flowers, and anyone who tends to overwater.

Key Features and Benefits

• Fine 50/50 blend of peat moss and perlite
• Peat moss holds even moisture for steady germination
• 50% perlite keeps the mix light, airy and free-draining
• Soil-free, with fewer weed seeds than garden soil
• Helps reduce waterlogging and damping-off
• For seed trays, punnets, cuttings and pricking out
• Suits vegetables, flowers and herbs
• Available in 80L and 10L bags

Product Details

• Product: Seed raising mix with peat moss
• Blend: 50% peat moss, 50% perlite
• Texture: Fine
• Uses: Seed raising, cuttings, propagation, pricking out
• Sizes: 80L, 10L
• Nutrients: Low, feed seedlings once true leaves appear

Frequently Asked Questions

What is this seed raising mix made of?

It's a fine blend of 50% peat moss and 50% perlite. The peat holds moisture for germination, and the perlite keeps the mix airy and free-draining.

Can you use peat moss and perlite for seedlings?

Yes. Peat moss and perlite is one of the most common seedling mixes. Pre-moisten it before sowing, as dry peat repels water, and start a weak liquid feed once true leaves appear.

What is seed raising mix?

Seed raising mix is a fine, light, free-draining growing medium made for germinating seeds and young seedlings. It's finer and lower in nutrients than potting mix, so it gives small seeds close contact with moisture.

Do you really need seed starting mix?

For fine or slow seeds, yes. Potting mix and garden soil are often too coarse, rich or heavy, which leads to patchy germination and damping-off. Large seeds like beans and pumpkins are more forgiving.

What is the best mix for growing seeds?

The best seed raising mix is fine, light, soil-free and free-draining while still holding moisture. Peat moss or coir with perlite or vermiculite are the usual bases. A mix with more perlite suits growers who tend to overwater.

What soil is best for starting seeds?

Avoid garden soil for seed trays, as it compacts and may carry weeds and disease. A soil-free seed raising mix gives better, more even germination.

Can I use 100% peat moss for seeds?

It's better mixed. Straight peat is acidic, low in nutrients and can stay too wet or dry out hard. Adding perlite, as in this 50/50 mix, keeps it airy and easier to manage.

Where can I buy this seed raising mix in Australia?

This Peat Moss and Perlite Seed Raising Mix is available from Bonnyrigg Produce & Garden Supplies at 462 Elizabeth Dr, Bonnyrigg NSW 2177, Australia. You can visit our store or order online with delivery across Australia.