Monitor the conditions your plants grow in with garden thermometers and weather measuring instruments. Our range includes Ryset maximum and minimum thermometers, waterproof digital min/max thermometers, fixed probe thermometers, 90cm soil and compost thermometers and multi-function meters. Tracking overnight lows and daytime highs helps you manage greenhouse ventilation, protect plants from frost and time sowing. Soil thermometers tell you when the ground is warm enough to plant and whether your compost is heating properly.