Smart plant tools

Care Calculators for Better Plant Decisions

By PlantSolve Editorial Team

Use lightweight calculators for watering, fertilizer dosage, potting mix, sunlight, humidity, growth planning, and seasonal plant care.

Tools
12
Inputs
Labeled
Result
Instant

Recommended first

Watering Calculator

Calculate the correct watering frequency for your plant based on species, pot size, soil type, season, and climate.

Open calculator

All Plant Care Calculators

Aquarium Plant Fertilizer Dosage Calculator

An interactive fertilizer dosage calculator for planted aquariums that accounts for tank volume, light intensity, plant load, CO2 injection, and preferred dosing method (EI, PPS-Pro, or low-tech) to generate precise macro and micro nutrient dosing schedules.

Fertilizer Calculator

A precision fertilizer calculator that generates species-specific feeding schedules and dosage recommendations based on your plant type, container size, current growth stage, and local climate conditions.

Feed Schedule

Grow Bag Sizing Calculator

A grow bag sizing tool that matches your plant species and expected mature size to the ideal fabric bag volume, ensuring proper root development, drainage, and air pruning for healthier plants.

Growth Timeline Calculator

An interactive plant growth timeline tool that predicts key milestones — germination, transplanting, first bloom, and peak maturity — based on your plant species, current date, climate zone, and care inputs.

Growth Calendar

Heat Stress Diagnosis Calculator

A structured heat stress assessment tool that evaluates your plant's risk level based on ambient temperature, humidity, sun exposure duration, and visible symptom patterns — then outputs specific, climate-adjusted care actions for water management, shade positioning, and airflow improvement.

Heat Stress Climate

Humidity Calculator

A humidity assessment calculator that compares your current indoor relative humidity against the ideal range for your specific tropical plant species, then recommends targeted improvements — humidifiers, pebble trays, misting schedules, or plant grouping strategies.

Humidity Tropical

Neem Oil Spray Calculator

A neem oil dilution calculator that generates precise mixing ratios based on your spray bottle volume, neem oil concentration, target plant species, and infestation severity — preventing the leaf burn that results from over-concentrated applications.

Potting Mix Ratio Calculator

A soil blend calculator that generates precise potting mix ratios — combining base soil, perlite, bark, coco coir, and other amendments — tailored to your specific plant family, pot drainage, and climate conditions.

Repotting Calculator

A repotting assessment tool that evaluates your plant's current pot size, root health indicators, and growth rate to determine if repotting is needed — and recommends the optimal new container size and best soil mix for the transition.

Repot Size

Planting & Sowing Calendar

An essential planting calendar for vegetable and herb gardeners. Find exact indoor and outdoor seed-sowing dates tailored to your USDA Hardiness Zone to avoid frost and maximize your harvest.

Sunlight Calculator

A light placement tool that matches your plant's specific light needs against your available window directions and seasonal sunlight hours — recommending the optimal room position and supplemental lighting options if natural light is insufficient.

Light Placement

Recommended next actions

Use Results in Real Care Workflows

After running a calculator, open matching plant guides and focused journal articles for practical next steps.

Calculator

Aquarium Plant Fertilizer Dosage Calculator

Calculate exact macro and micro fertilizer doses for your planted aquarium based on tank volume, plant density, CO2 system, and dosing strategy.

Calculator

Fertilizer Calculator

Calculate the exact fertilizer dose and feeding schedule for your plant based on species, pot size, growth stage, and season.

Calculator

Grow Bag Sizing Calculator

Find the perfect grow bag size for your plant based on root depth, plant type, and expected mature size.

Plant Guide

African Milk Tree

The African Milk Tree is a towering, architectural succulent that looks like a cactus but behaves entirely differently. It is famous for its extreme drought tolerance and its highly toxic white sap.

Plant Guide

African Violet

African Violets are classic indoor bloomers, but their fuzzy leaves demand a unique watering approach. We break down the 'bottom-watering' technique essential for preventing crown rot and triggering year-round flowers.

Plant Guide

Aglaonema

After growing and propagating over 120 Aglaonema specimens across beginner and advanced cultivars in centrally heated homes and low-light interiors over the past 8 years, our team has mastered the precise balance of light, water, and humidity this plant demands — from the dry air of winter radiators to the overwatered pots of summer.