Environmental Dashboard

Keep eyes on your plants from anywhere.

Bizon sensors track temperature, humidity, VPD, CO₂ and soil moisture, and report to one dashboard on your phone or computer. You get an alert when a room drifts out of range. The sensors are in production testing now. For the closest look at the plant, the L2A sensor reads leaf temperature for true leaf-to-air VPD.

Growing at home? See the garden and lawn tools

Demo Room · 3 sensors reporting Air temp24.9°C Humidity44% CO₂1137ppm Soil moisture63% VPD over a day in the demo room, target band shaded

Home, Garden & Lawn

Figure out what your lawn and garden need.

Enter a soil or water test and get what to add, in bags and pounds. Get a lawn feeding program for your grass and square footage, a sowing calendar from your frost dates, and a to-scale garden planner. Every home tool is free to use, some with limits on what you can save or how far they go. The Homeowner plan, $45 a year, lifts most of them. For a limited time, founders can pay $99 once instead.

Growing commercially? See the Pro tools and sensors

Example lawn plan · Kentucky bluegrass · 5,000 sq ft Late May0.75 lb N15.6 lb of 24-0-6 Early Sep1.0 lb N20.8 lb of 24-0-6 Late Oct1.0 lb N20.8 lb of 24-0-6 Nitrogen per 1,000 sq ft, and the pounds to spread

The Toolshop

Calculators and planners for growers, farmers, homeowners and gardeners. No account needed to start.

By topic: Lawn tools · Garden tools · Indoor growing · All tools

Chemigation System

Set up your fertigation system once, then work out exactly what to feed.

Environment & Climate

Flagship

Environmental Dashboard

Live temperature, humidity, and VPD, streamed from our sensors to your dashboard. The L2A sensor adds true leaf-to-air VPD and stats on how much your lights heat the canopy.

Grow Light Planner

Calculate average PPFD and DLI checked against your stage targets.

VPD Chart & Calculator

Leaf VPD from air temperature, humidity and leaf temperature, the humidity that hits the target for each growth stage, and a color chart in °F or °C.

Degree Day Calculator

Growing degree days for your location against the average year: when vegetables, herbs, flowers and berries should be ready, plus corn, lawn and pest timing.

Chill Hour Calculator

Winter chill hours for your location against the average winter, with how many hours fruit trees, berries and nuts need and how cold they take.

Field & Greenhouse Planning

Garden & Bench Planner

Lay out plots, rows, and greenhouse benches to scale, up to about 20 acres. Place crops at their real spacing, get plant counts per block, and a planting calendar for the whole site.

IPM Planner

For gardens, lawns and greenhouses alike. Pick your pests and get the gentlest fixes first, which sprays are safe around ladybugs and other good bugs, and when to switch products so pests don't build resistance.

Sprayer Calibration Calculator

Calibrate a boom or backpack sprayer with water: gallons per acre from nozzle catches, speed and spacing, worn nozzles flagged, and how much product goes in each tank.

Nutrition & Feeding

Fertilizer Stock Tank Top-Off

From what's left in a stock tank, get exactly how much of each part to add to hit your targets.

EC & PPM Converter

Translate between EC, CF, and ppm on the 500 and 700 scales, and dial in target strength by crop stage.

pH Adjustment Calculator

Enter your water test (hardness and alkalinity) and get how much acid or base to add to hit your target pH.

Foliar Spray Calculator

How strong to mix a leaf spray of calcium, magnesium, iron, zinc, boron and more, from extension ranges, with grams to weigh out and the ppm it makes.

Irrigation & Substrate

Soilless Mix Calculator

Blend a soilless media by ratio (say 1:1:0.5 peat/perlite/vermiculite) and get bulk density, porosity, and water-holding capacity.

Soil Test Calculator

Read your soil report (CEC, base saturation, pH, organic matter, and nutrient levels) and get a clear amendment plan, on whichever test your lab used.

Water Quality Analyzer

Read your source-water report (pH, EC, alkalinity, hardness, sodium, chloride) and find out if it's fit to irrigate with, plus a treatment plan.

Breeding & Trials

Pheno Tracker

Track each plant in a hunt or breeding project: parents, clones, trait scores, photos, keep and cull decisions, and QR pot labels.

Trial Designer

Lay out randomized plots and replicates, build treatment matrices, and export clean data for your stats package.

Lawn Care & Landscaping

Lawn Fertilizer Calculator

Build a nitrogen feeding program for your lawn by grass type, climate, and size: how much, when, and how many bags to spread.

Lawn Watering Calculator

How much and how often to water: inches per week, days per week, and run-minutes per zone with cycle-and-soak.

Seeding & Overseeding Calculator

Pounds of seed to buy, the best window to sow, germination time, and how to water it in for the first month.

Lime Calculator

How much lime your lawn needs, in pounds and bags, without a soil test. By soil type, grass and lawn size.

Native Plant Finder

Natives for your ZIP code or town, with photos. US results are curated, with filters for edible parts, color, drought tolerance and sun, and planting and soil guidance for each.

Tree Planting Tool

Fruit, shade, ornamental and evergreen trees: hole and root ball size, drainage, spacing from the house and the wires, mulch, and the watering schedule to establishment.

Home Gardening

Simple Fertilizer Calculator

Enter your fertilizer's N-P-K, container, and strength for teaspoons and grams plus the N-P-K delivered. Works for a watering can, a reservoir, or an injector at its ratio, with up to three products mixed and dosed together, including multi-part systems like Hoagland's.

Seed Starting Calculator

When to start seeds, transplant, and sow outdoors by plant and your local frost dates, plus a rough harvest window.

Companion Planting Guide

Pick a plant to see what it grows well beside and what to keep it away from, so you can arrange beds that help each other.

Plant Problem Diagnosis Key

A free plant health check: describe what you see or answer one question at a time to identify a pest, disease, nutrient deficiency or growing-condition problem. Paid plans add prevention and treatment for each crop.

Garden Planner & Scheduler

Draw your garden to scale, add beds of any shape, drop in plants sized to their spacing, and get a planting calendar for the crops you place.

University Extension

Search garden, farm and pest advice from university Extension services across the US in one place, and find your county office, Master Gardeners, soil testing labs and plant diagnostic labs.