Make the most of your indoor growing space with the Three Top Windowsill Propagator—a clever and compact system designed to sit neatly on standard-sized windowsills. Ideal for seed sowing and cuttings, this kit includes three individual high-dome propagators housed within one sturdy base tray, offering the perfect microclimate for healthy germination.
Each unit features a deep, clear lid that provides generous vertical space for taller seedlings or larger cuttings. The high-dome design helps retain warmth and humidity, while also allowing for airflow and light penetration—critical for preventing fungal issues and encouraging robust, upright growth.
The tray and base are made from strong, injection-moulded plastic, while the clear lids are vacuum-formed to keep the kit lightweight but functional. Whether you're starting herbs in the kitchen or propagating flowers in a conservatory, this system offers organised, fuss-free growing in even the smallest spaces.
And just like the rest of our propagation range, it's made using 100% recycled plastic (apart from the clear lids) and is reusable season after season. Extra trays and lids can also be purchased separately if needed.
Why We Love It at Allotmate Essentials
This is a brilliant space-saving solution for gardeners without a greenhouse. We love using it for kitchen herbs and quick crops like lettuce or spring onions. The three separate propagators make it easy to stagger sowings or grow different plants at once, and it fits most windowsills like a glove. Great value, easy to use, and built to last.