Plant & Soil Measuring Supplies & Test Kits | Johnny's Selected Seeds

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Weather, soil, and nutrient monitoring play a vital role in crop management and plant health. We offer a selection of weather instruments used daily at our research farm in Albion, Maine to help us determine when and how much to water, plant, ventilate, protect, harvest, and more. We also offer home soil test kits so you can keep an eye on nutrient levels, pH, and other important parameters.

9 Products

Compost Thermometer – 20" Compost Bins & Accessories

Compost Thermometer – 20"

Ergonomic measurement of your compost pile or soil.

Shock-Proof Rain Gauge Test & Measuring Equipment

Shock-Proof Rain Gauge

Tough, inexpensive gauge for creating mini at-home weather station.

LaMotte's Gardener's Soil Test Kit Test & Measuring Equipment

LaMotte's Gardener's Soil Test Kit

Refillable kit tests pH, nitrogen, phosphorus, and potassium.

Moisture Meter Compost Bins & Accessories

Moisture Meter

Easy moisture monitoring for compost and garden soils.

Direct Reading Soil Tester Test & Measuring Equipment

Direct Reading Soil Tester

Portable and rugged construction, no need for batteries or calibration.

Soil Thermometer Test & Measuring Equipment

Soil Thermometer

Quick response of a bimetal thermometer with calibratable accuracy.

LaMotte's Soil Test Refill Kit Test & Measuring Equipment

LaMotte's Soil Test Refill Kit

Soil Test Kit Accessory

Refills for LaMotte's Gardener's Soil Test Kit.

4.01 pH Buffer Solution Test & Measuring Equipment

4.01 pH Buffer Solution

Improves accuracy of pH meter by allowing precise calibration.

7.01 pH Buffer Solution Test & Measuring Equipment

7.01 pH Buffer Solution

For calibration and electrode storage.