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    Seeds & Propagation
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    Top picks for you

    This page has growing media and propagation gear rather than seeds: German-made expanded clay balls for hydroponics in 1L, 5L, 10L and 50L bags, Nutrifield coco peat bricks, a Nutrifield pack of eight stonewool propagation blocks, biodegradable seedling trays and a Green Fingers mini greenhouse.

    How to choose

    Hydro clay balls. The listings give the clay balls as 8-16mm across and inert, for structural support in a hydroponic system. The 1L bag weighs about 400g. The 50L bag weighs about 20Kg, so plan how you will move it.

    Coco peat bricks. A Nutrifield coco brick is compressed coir that expands in water. A 650g brick expands to 9L of coco and a 5Kg mega brick to 55L. For the 650g brick, the listing says to pour about 5L of warm water over it and let it expand for 10 minutes. The 650g brick comes single or in packs of five and ten. The 5Kg mega brick comes single or in a pack of four.

    Starting seedlings. The stonewool propagation blocks measure 75 x 75 x 65mm, eight to a pack. The biodegradable seedling trays, listed as 10pcs and 12-hole, are made from recycled waste paper, and the listing says they can go straight into the soil. The Green Fingers mini greenhouse is 50 x 25 x 25cm with a clear PVC cover and a zip opening for watering.

    Growing media and propagation compared

    Product Type Size Listed detail
    1L Hydro Clay Balls Expanded clay 1L bag About 400g, 8-16mm balls
    5L Hydro Clay Balls Expanded clay 5L bag About 2kg, 8-16mm balls
    10L Hydro Clay Balls Expanded clay 10L bag About 4kg, 8-16mm balls
    50L Hydro Clay Balls Expanded clay 50L bag About 20Kg, 8-16mm balls
    Nutrifield 650g Coco Brick Coco peat 1 x 650g Expands to 9L
    Nutrifield 650g Coco Brick, five pack Coco peat 5 x 650g 9L per brick
    Nutrifield 650g Coco Brick, ten pack Coco peat 10 x 650g 9L per brick
    Nutrifield 5Kg Coco Mega Brick Coco peat 1 x 5Kg Expands to 55L
    Nutrifield 5Kg Coco Mega Brick, four pack Coco peat 4 x 5Kg 55L per brick
    Nutrifield Stonewool Blocks Stonewool Pack of 8, 75 x 75 x 65mm Propagation blocks
    Biodegradable Seedling Trays Seedling trays 10pcs, 12-hole Recycled waste paper
    Green Fingers Mini Greenhouse Mini greenhouse 50 x 25 x 25cm Clear PVC cover, zip opening

    Raised garden beds, planters and grow tents are on the plants and planters page, and more garden gear is on the gardening page.

    Frequently asked questions

    Does this page sell seeds?

    No. It has growing media and propagation gear: hydro clay balls, coco peat bricks, stonewool blocks, seedling trays and a mini greenhouse.

    How much coco does a Nutrifield brick make?

    The listings say a 650g brick expands to 9L of coco and a 5Kg mega brick to 55L.

    What size are the hydro clay balls?

    The balls are round and 8-16mm across. They come in 1L, 5L, 10L and 50L bags.

    Can the seedling trays be planted in the soil?

    Yes. The listing says the biodegradable trays, made from recycled waste paper, can be planted straight into the soil.

    Can I return growing media?

    We offer 30-day returns on most items, but change-of-mind returns do not apply to commercial-use products that have been used. See our return policy for the details.

    Delivered Australia-wide in 3 to 5 business days. Orders with a total value of $100 or more qualify for free shipping.

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