25% off Which? Gardening
Pay £36.75 for the first year and get the garden you want for less
Get this offerBy clicking a retailer link you consent to third party cookies that track your onward journey. If you make a purchase, Which? will receive an affiliate commission which supports our mission to be the UK's consumer champion.
Heated propagators are great for improving the germination rate of your seeds and helping you get cuttings to root.
They’re cheap to run, and you don’t need a lot of space for them as there are plenty that will fit on a windowsill.
Our tests reveal the best ones to go for, and we give you a few tips on using them.
Breathe new life into your outside spaces. Sign up for our Gardening newsletter, it's free monthly
When testing heated propagators we looked for the models that regulated the temperature well, had good ventilation and would work equally well for cuttings and seeds.
One of our Best Buys worked well for seedlings and cuttings and had great ventilation. Another gave great options for seed sowing.
Which? members can log in now to see the full results and which are our Best Buys. If you’re not a member, join Which? to get instant access.
Product name | Dimensions L x W x H (incl. lid) cm | Overall Score | Instructions | Suitable for seeds and cuttings | Temperature - how well regulated | Temperature - eveness | Germination rate | Ventilation |
---|---|---|---|---|---|---|---|---|
EarlyGrow Heated 3-Bay Windowsill Propagator | ||||||||
EarlyGrow Heated Propagator, Medium | ||||||||
Garland One Top Electric Propagator | ||||||||
Garland Super 7 Electric Windowsill Propagator | ||||||||
Garland Trio Top Electric Windowsill Propagator | ||||||||
Sankey Electric Propagator 38cm Growarm 100 Kit | ||||||||
Selections Jumbo Windowsill Heated Plant Propagator (80cm) |
Ignores price and is based on: Instructions, 5%; suitability for seeds and cuttings, 10%; temperature regulation, 25%; temperature eveness, 25%, germination, 20%, ventilation 15%
Pay £36.75 for the first year and get the garden you want for less
Get this offerThermostats
Using your propagator
Take cuttings with Best Buy secateurs