Which Soil Blocker Is Right For You?
Choosing the right soil blocker depends on what you're growing and how you like to work. Here's a simple guide to help you decide.
If you want to grow…
Small Seeds (Cut Flowers & Salads)
Medium to Large Seeds
Potting on or large plants
use this block size
Small (27 × 27 × 37 mm)
Large (54 × 54 × 54 mm)
Extra Large (75 × 75 × 75 mm)
Block Size Guide
Small
27 x 27 x 27 mm
Best for smaller seeds
Ideal for high - volume sowing
Saves Space
Available in the Compact 36 and 112 Blocker
Best For:
Ammi
Daucus
Larkspur
Phlox
Celosia
Snapdragons
Amaranthus
Nigella
Lettuce
Radish
Statice
Lisianthus
Helichrysum
Foxgloves
Large
54 x 54 x 54 mm
Best for medium, large and fast growing seeds
Allows more time to grow before transplanting
Also great for cuttings
Available in the Compact 9 and 28 Blocker
Best For:
Sunflowers
Cosmos
Zinnias
Tomatoes
Peppers
Squash
Honesty
Peas
Beans
Aubergine
Cucumber
Sweetcorn
Nasturtium
Cuttings
Extra Large
75 x 75 x 75 mm
Pot on into these from smaller blocks
Best for Large Plants
Eliminates the need for pots
Available in the 15 Blocker
Want to know more about soil blocking?
The Potting On Plate
The potting on plate allows you to transfer seedlings from small blocks into extra large blocks—without disturbing the roots.
Continued plant growth
Less transplant shock
Roots continue to benefit from air pruning
Reduces plastic waste
Popular Starter Set
The complete pot-free system.
112 Soil Blocker (small block size)
15 Blocker (Extra Large Blocks)
Potting On Plate
