6 Accurate and Affordable Soil Test Kits for 2024

Building a nutrient-rich soil is essential for cultivating healthy cannabis plants capable of producing large, high-quality buds. Even experienced growers may be left guessing whether their soil’s pH and nutrient levels are within the optimal ranges without the use of an accurate soil tester.

Fortunately, soil testing kits now offer a variety of features that provide clear, actionable insights into soil composition. These kits typically measure pH levels, essential macronutrients (nitrogen, phosphorus, potassium), trace micronutrients (like calcium and magnesium), moisture content, soil temperature, electrical conductivity (EC), and in some cases, organic matter. This data empowers growers to fine-tune nutrient absorption, watering schedules, and overall plant health to improve yields. From mail-in lab services to affordable, instant results, there’s a soil test kit or service to fit nearly every budget and accuracy need in 2024.

Soil testing methods

Popular soil testing methods include pH test strips, liquid pH kits, digital meters like the widely-used Hanna pH Meter, analog probes, chemical test kits, mail-in lab analysis, and even smartphone apps that can analyze soil chemistry with the help of iPhone or Android devices. Some of these tests also come with moisture meters, providing additional insight into your soil’s overall health.

To help you make an informed decision, we’ve compiled a list of eight industry favorites, highlighting what makes each soil tester stand out as a valuable tool for your farm or grow room. While every kit on our list delivers accurate pH readings, many of the higher-end models function as comprehensive soil health monitors, offering in-depth data on moisture, temperature, nutrients, and even potential threats like pathogens and pests.

Soil Testing Kits for Cannabis Cultivators

There’s no one-size-fits-all solution when it comes to soil testing kits for cannabis cultivation. What works best for a large-scale commercial operation may be excessive for a first-time grower looking for a simple pH check. Each cultivator has unique needs, whether it’s a detailed nutrient analysis before a new season or a quick soil health snapshot when something looks off. That’s why growers have to take an honest assessment of their needs and budget to help identify the best soil test kit for any garden.

Bluelab OnePen

Price: $249
Category: 3-in-1 pen meter
Tests: pH, conductivity (EC/PPM), and temperature
Time for results: Immediate

Launched in September 2024, Bluelab OnePen is a versatile, advanced tool designed for cannabis cultivators of all levels. With the ability to measure pH, EC/PPM, and temperature in one device, it simplifies plant monitoring and decision-making. Featuring a bright display, IP68 dust and waterproof design, replaceable probe, and app compatibility for data tracking, the OnePen is built for durability and precision. Its rugged design and comprehensive measurement capabilities make it an investment worth considering for both home growers and commercial operations.

Garden Tutor Soil pH Test Strips Kit

Price: $14.49
Category: pH test strips
Tests: pH
Time for results: Immediate

While this method requires a bit more attention to detail, the Garden Tutor Soil pH Test Strips Kit is an affordable, reliable option specifically calibrated for soil testing. Unlike universal strips, these are designed for soil pH, offering more precise results. The kit includes 100 tests and clear instructions, making it a practical choice for budget-conscious growers. At just $14.49, it’s an excellent value for those looking to ensure their soil is within the proper pH range.

Luster Leaf 1662 Soil Test Kit

Price: $24.52
Category: Chemical soil test kit
Tests: pH, nitrogen (N), phosphorus (P), potassium (K)
Time for results: Within minutes

The Luster Leaf 1662 is a reliable and budget-friendly option for home growers looking to test essential NPK soil components. This kit provides quick readings for pH, nitrogen, phosphorus, and potassium, helping cultivators make informed decisions about their soil health. Ideal for those who want a simple, straightforward test without lab wait times, it offers a practical solution for maintaining nutrient balance without needing advanced tools. Each pack includes enough solution for about 40 tests.

Luster Leaf 1605 Digital Soil Test Kit

Price: $25.50
Category: Digital soil test kit
Tests: pH, nitrogen (N), phosphorus (P), potassium (K)
Time for results: Immediate

The Luster Leaf 1605 offers a modern, user-friendly approach to soil testing with digital accuracy. It provides quick, reliable readings for pH, nitrogen, phosphorus, and potassium levels, giving home growers and hobbyists essential insights into soil health. The digital display ensures easy-to-read results, making it a practical option for those who prefer a more high-tech solution. This kit is ideal for cultivators seeking a balance between convenience and precision without needing laboratory testing.

Soilscape Solutions

Price: $100-$250
Category: Comprehensive third-party testing
Tests: pH, pathogens, insects, and overall nutrients
Time for results: Consultation will be scheduled within 48 hours

For top-tier soil and pH testing, it’s tough to surpass the precision of a lab-based service like Soilscape Solutions. Specializing in cannabis cultivation, this Humboldt-based company offers in-depth soil and plant tissue testing, with recommendations for organic amendments to optimize the garden for cannabis plants. After submitting a brief survey and mailing in a sample, you’ll receive lab results followed by a detailed consultation within 48 hours. While it’s more of an investment, the comprehensive insights and expert advice make Soilscape a valuable tool for serious growers. In addition to nutrient analysis, Soilscape also offers testing for water, pathogens, pesticides, biology, and insect identification.

MySoil Soil Test Kit

Price: $29.99
Category: Lab testing kit
Tests: pH, macronutrients, micronutrients
Time for results: Six to eight days after sample submission

For home growers seeking a lab-based soil analysis, the MySoil Soil Test Kit offers an affordable and straightforward solution. Simply collect a soil sample, mail it in, and receive lab results on your soil’s pH, basic nutrient content, and general recommendations for optimizing plant health. While far less comprehensive than high-end and industry-specific commercial testing, this kit provides valuable insights into your soil’s condition for the cost of a few seeds, making it an excellent choice for hobbyist cultivators wanting more precision than basic DIY kits offer.