Garland 9cm Replacement Tray Pots (18 Pack) – Durable Inserts for Propagation

£6.65

The 9cm square pot is the workhorse of serious propagation — the size you reach for when seedlings are ready to leave their starter trays, when cuttings have rooted and need their own space, when plug plants arrive and need somewhere to grow on. They fit standard seed trays in neat rows, they nest cleanly when empty, and a serious propagation setup needs them in proper quantity.

These are Garland 9cm Vegetable Tray Pots — properly considered everyday propagation kit from a British horticultural manufacturer who've been making this kind of thing since 1968. Made in the UK from 100% recycled plastic, fully recyclable at end of life, and designed to last several seasons of regular use with a bit of care.

From Garland Products, our trusted British horticultural manufacturer. Supplied to us through our partners at AllotMate, who curate proper, well-made tools and equipment for gardeners and allotmenteers who'd rather buy once.

🌱 What they're for

The 9cm square pot is the standard "potting-on" size in serious propagation — generous enough for proper root development, compact enough to fit dozens in a propagator or cold frame:

  • Potting on vegetable seedlings — tomatoes, peppers, chillies, courgettes, brassicas, salads, herbs after their initial seed-tray stage
  • Striking and growing cuttings — softwood, semi-ripe, herbaceous cuttings of all kinds. Ideal for geraniums, fuchsias, herbs, cottage garden perennials
  • Growing on plug plants — bringing them up to a planting-out size before final move
  • Sowing larger seeds individually — beans, peas, sunflowers, sweetcorn, where each seed wants its own pot
  • Container herbs — many smaller herbs are happy living long-term in a 9cm pot on a kitchen windowsill
  • Replacement and expansion for existing propagation setups, where pots have cracked, warped or been lost

If you're serious about propagation, you'll go through these in volume during spring. Buying ahead in proper quantities is far more sensible than topping up in twos and threes from the garden centre.

📐 Specifications
  • Size: 9cm × 9cm × 10cm deep (3.5" × 3.5" × 4")
  • Shape: Square — fits standard seed trays in neat rows, no wasted space
  • Material: 100% recycled plastic, fully recyclable at end of life
  • Manufacture: Made in the UK
  • Range: Garland Professional Propagation Range
  • Lifespan: 2–3 seasons of regular use with reasonable care
  • Made by: Garland Products, UK (since 1968)
  • Supplied through: AllotMate
♻️ The recycled plastic story

These pots are made entirely from recycled plastic — the raw material has had at least one previous life elsewhere before being remade into propagation kit. At end of life, they're recyclable again, so the material stays in circulation rather than ending up in landfill.

For propagation kit (which broadly has to be plastic — fibre pots are wonderful but not infinitely reusable), recycled-plastic construction is genuinely the best of a difficult choice. It uses no new petrochemical material, keeps existing plastic out of waste streams, and delivers the durability that fibre pots can't match for repeat-season use.

Pair these with the matching Garland Budget Propagators — also 100% recycled plastic — for a coherent low-impact propagation setup.

🔧 Looking after them

The supplier rates these for 2–3 seasons of regular use. With a bit of small care, that's genuinely achievable — and the longer the pots last, the better the cost-per-use calculation becomes:

  • Wash between seasons — a quick wash with hot soapy water removes compost residue, root marks and any potential disease carryover. Particularly important if you've grown anything diseased in them previously
  • Air dry properly before stacking for storage — damp pots stored together encourage mould
  • Stack carefully — over-tight stacking can crack the pots over time. Loose stacking with occasional rotation extends their life
  • Store out of direct sunlight — UV degrades plastic over time, so a covered shed beats a sunny windowsill for storage
  • Replace when they crack — recycled-plastic pots eventually fail, and a cracked pot loses its structural integrity for proper root growth

Treated this way, you'll genuinely get the rated 2–3 seasons out of them. For longer-term investment, Garland also produce a Premium range designed for 10+ years — but for most gardeners, the Professional range delivers the right balance of cost and durability.

🤝 Pairs with the rest of your propagation kit

These pots fit into a coherent propagation setup. Worth thinking of them alongside:

  • Garland Budget Propagators — the matched seed-starting kit; pots fit comfortably inside the propagator base
  • Burgon & Ball Cell Tray Trowels — the right precision tools for filling and pricking out into pots this size
  • Burgon & Ball Compost Scoop — for the bulk filling work
  • Burgon & Ball Dibber — for setting larger seeds at consistent depth in individual pots
  • Bamboo plant labels — to mark which pot has which variety

Build the kit over time, and a serious spring propagation routine becomes far less effortful and considerably more enjoyable.

A small thought: propagation is one of the gardening pleasures that rewards proper kit. The right pot, in the right size, in the right quantity, lets you sow with confidence rather than stretching a too-small selection across too many seedlings. These aren't fancy, they aren't beautiful, and they don't need to be — they're the everyday workhorse that quietly supports the work that fills your garden by July.