The middle tier of our Garland propagator range — double the capacity of the 12-cell starter kit, but without the additional cost of the Fast Root split-cell technology. The Garland 24-Cell Self-Watering Seed Success Kit is properly the right choice for the gardener who knows they want more cells but is happy with the standard self-watering setup. At £15.25 it offers per-cell value better than either of the smaller or step-up propagators in our range — the sensible middle option for serious indoor sowing.

From Garland, the established British horticultural brand specialising in propagation, greenhouse and growing equipment. Made from recycled plastic; built to last multiple seasons.

The same proven self-watering principle — just doubled

This propagator uses the same proven mechanism as our 12-cell starter model, with twice the growing capacity:

• Water reservoir tray at the base; holds enough water for several days of plant uptake
• Injection moulded support platform — the engineered raised platform that holds the growing tray slightly elevated above the reservoir
• Capillary matting between the platform and the growing tray; draws water upward by capillary action
• 24-cell growing tray on top; seedlings absorb moisture through the compost from the matting as required
• Clear propagator lid traps warmth and humidity for proper germination conditions

The principle is simple: water sits in the reservoir, capillary action delivers it to the cells, plants take exactly what they need. No daily watering, no overwatering, no drought stress. Refill the reservoir when it runs low — typically once a week.

24 cells — properly the right scale for more ambitious sowing

The 24-cell format opens up genuinely different sowing possibilities compared to the 12-cell starter:

• More varieties in one tray — 24 different seedlings in one compact unit. Three each of eight chilli varieties, or six each of four tomato varieties, or a mixed herb selection
• Larger batches per variety — sow 4-6 seeds per variety to allow for selecting the strongest seedlings to transplant
• Succession sowing — some cells for an immediate sowing, others for a fortnight later, all in the same controlled environment
• Mixed seed and cutting work — some cells for seeds, others for taking soft cuttings of herbs
• Cottage garden annuals at proper plug stage — raise more cosmos, zinnia, antirrhinum, nicotiana for the borders

Each cell measures the same as the 12-cell starter (5cm x 4.7cm x 5.8cm deep, holding approximately 0.1L of compost). The propagator overall measures 37.5cm long and 23cm wide — properly the right size for wide windowsills, greenhouse staging, or potting benches. Compact enough to remain home-scale; generous enough for proper indoor propagation.

What you'll grow in it

The 24-cell standard propagator suits virtually all indoor seed sowing:

• Tomatoes — multiple varieties for season-long cropping; sow February-April
• Chillies and peppers — need longer germination periods and consistent warmth. Try our chilli and pepper seed range
• Aubergines — another warmth-loving Solanum that benefits from controlled sowing
• Half-hardy annuals — cosmos, zinnia, antirrhinum, nicotiana, salvia. Sow March-April for May/June planting out
• Herbs — basil, parsley, coriander, dill, chives, thyme. See our herb seed range
• Microgreens — the cell size suits short-cycle microgreen production. See our microgreen seed range
• Salad leaves — lettuce, rocket, mizuna, mustards for early-season harvests
• Brassicas — cabbages, kales, broccolis, cauliflowers for the vegetable garden
• Cottage garden seeds — the half-hardy annuals that make cottage borders sing

Particularly good for

• Gardeners stepping up from a 12-cell propagator — the natural next step when you've outgrown the entry-level kit
• Multi-variety growers — 24 cells properly suit raising several varieties at once
• Allotmenteers — raise enough plants to fill a substantial vegetable plot
• Cottage garden growers — raise the half-hardy annuals that fill cottage borders
• Cut flower growers — bulk-raise the season's cosmos, zinnias, sweet peas
• Greenhouse owners — properly the right scale for greenhouse propagation areas
• Wide-windowsill gardeners — 37.5cm x 23cm fits kitchen, conservatory or utility room windowsills properly
• Budget-conscious gardeners — better per-cell value than the smaller propagator
• Anyone happy with standard cells — this gives the capacity benefit without the additional cost of the Fast Root features
• As a gift for a gardener with serious propagation intent — properly considered without being extravagant

Choosing between the three propagators in our range

All three Garland propagators use the same self-watering principle; the right choice depends on capacity needs and feature priorities:

• 12-Cell Self-Watering Propagator — the windowsill starter at £10.35. The right choice for a small collection of seedlings, limited space, or first-time indoor sowing
• 24-Cell Self-Watering Standard (this) — £15.25. The capacity upgrade for the same proven technology. The right choice if you want more cells but don't need advanced features
• 24-Cell Fast Root Propagator — £17.85. The technical upgrade with split cells, ridged sides for guided root growth, side ventilation slots for air pruning, and adjustable lid vents. The right choice for the serious grower wanting better root development and easier transplanting

The choice is genuinely customer-led. Some gardeners value capacity over advanced features; others prefer the engineering improvements of the Fast Root model. Both 24-cell options work properly for indoor seed sowing.

Built to last — the sustainability story

• Made from recycled plastic — circular-economy material rather than virgin
• Designed for repeated use — multiple seasons of seasonal use; not a disposable product
• Dishwasher-safe — the trays can be cleaned and sterilised between sowings, preventing disease carry-over from one batch to the next
• Replacement parts available — capillary matting can be replaced if it becomes stained over many seasons

For the gardener who cares about reducing waste, this is properly the right tool — you're not throwing away dozens of disposable seed trays each season.

Where this sits in our propagation range

The 24-cell standard propagator anchors the middle of our Propagation & Growing Essentials sub-collection:

• Garland 12-Cell Self-Watering Propagator — £10.35 starter
• Garland 24-Cell Self-Watering Standard (this) — £15.25 capacity upgrade
• Garland 24-Cell Fast Root Propagator — £17.85 technical upgrade
• Fungus Gnat Treatment Bundle — the natural pest protection partner; £15.00
• Fungus Gnat Nematodes — standalone nematode treatment; £9.00
• Smart Garden Digital Max/Min Thermometer — greenhouse and propagator temperature monitoring
• Garland Plant Protection Fleece — for hardening off seedlings once moved outside

Together these form the complete indoor-to-outdoor propagation kit — sow indoors in the propagator, protect from fungus gnats with the nematode treatment, monitor temperature, then move outside with frost protection from the fleece.

Specifications

• Brand: Garland (British horticultural specialists)
• Type: Self-watering propagator kit with capillary matting
• Cells: 24 individual cells
• Cell dimensions: 5cm x 4.7cm x 5.8cm deep
• Compost capacity per cell: Approximately 0.1L
• Overall dimensions: 37.5cm long x 23cm wide
• Includes: Water reservoir tray + injection moulded support platform + capillary matting + 24-cell growing tray + clear propagator lid
• Material: Recycled plastic; dishwasher-safe for sterilisation
• EAN: 5031670003119

About Garland

Garland is an established British horticultural brand specialising in propagation, greenhouse and growing equipment. They've supplied UK growers for decades with the practical kit that makes indoor and undercover gardening work properly. Their products are widely used in commercial nurseries as well as home gardens. We stock their range because they make tools that genuinely improve outcomes for the home grower.

A small thought: the satisfaction of indoor sowing scales properly with capacity — sowing 24 little compartments of carefully chosen varieties in February or March, watching them through germination and the first true leaves, then transplanting the strongest into the garden in May. The standard 24-cell propagator gives that satisfaction without the additional cost of advanced features — the simple, proven, double-capacity choice for the serious home grower. The kind of properly considered kit that just gets on with the job.