An NPK soil tester reads the three nutrients plants need most—nitrogen (N), phosphorus (P), and potassium (K)—plus soil temperature. This one gives you those readings in seconds from a dual-needle...

This Bluetooth 8-in-1 soil tester reads pH, EC, temperature, humidity, light, moisture, fertility, and salinity, and sends it all to a free app over Bluetooth. It is for gardeners who...

A multi-parameter soil tester that reads nitrogen, phosphorus, potassium, pH, EC, moisture, temperature, salinity and fertility from a single probe. Comparing the available soil readings together can give more context...

A plant in a poorly lit location may continue to struggle even when watering and soil conditions are corrected, and light is one of the causes people check last. This...