HarvestMath apps

Apps that do the garden math for you

Offline apps you buy once and keep, each with a free demo. Get the whole garden in one, or the one app for the job in front of you.

Best value

HarvestMath Garden

Your whole garden planned from a ZIP code: the layout, the watering, one shopping list and every job on a date. Every app on this page comes with it.

$49 once

The ten single apps cost $144 bought one by one.

Get Garden, $49 Try Garden free
  • A plan in five minutes
  • Square-by-square layout
  • Watering to the minute
  • Jobs in your own calendar
HarvestMath Garden: a finished plan from a ZIP code, a starter garden and the space, with 10 crops, 64 sq ft, 60 gallons a week and 24 things to buy
HarvestMath Garden on a phone: today's 11 jobs, starting with watering each bed

Everything below comes with it

All ten single apps: Feeding Planner, Season Planner, Companion Bed Designer, Bed & Bag Planner, Watering Schedule Builder, 12-Month Lawn Program, Tree & Shrub Care Planner, Houseplant Care App, Hydro Reservoir Manager and Plant Doctor.

Already own one of our apps? What you paid comes off the Garden, and it never costs less than $30. The upgrade link in your receipt email fills in your order.

Or one app for one job

Each app does one job well, on its own. All ten come with HarvestMath Garden.

Plan your garden, plant and space

What to grow, when to plant it and where everything goes, from vegetable beds to a year of lawn.

Season Planner

$19

Every seed, every date, every square: your whole season, worked out once.

The season plan for Columbus, Ohio: frost dates from the nearest NOAA station, the next job, and the seeds to buy

Built into HarvestMath Garden

Try free Buy, $19

Companion Bed Designer

$12

Pick your crops and it lays out the whole bed for you: good neighbors together, bad ones apart.

A 4 x 8 bed laid out from 8 crops: no bad neighbors, tall crops on the north side

Built into HarvestMath Garden

Try free Buy, $12

12-Month Lawn Program

$19

Seed, feed, mow and water on the right day, with the exact amounts for your lawn.

A tall fescue lawn's program: this week's jobs and this week's watering

Included with HarvestMath Garden

Try free Buy, $19

Soil, mulch and growing supplies

Exactly what to buy and mix: soil and mulch by the bag or yard, fertilizer by the ounce, nutrients by the gallon.

Bed & Bag Planner

$12

Every bed, pot and path on one shopping list: bags or bulk, mixed right.

The shopping list: 77 bags of topsoil, or 2.5 yards delivered for $160 against $462 in bags

Built into HarvestMath Garden

Try free Buy, $12

Feeding Planner

$19

Every bed, every bag, every date: worked out once.

The next feeding due: 10 oz of 10-10-10 for tomatoes, plus the rest of that week's tasks

Built into HarvestMath Garden

Try free Buy, $19

Hydro Reservoir Manager

$12

Mix it right, read it right, change it on time: every reservoir kept in range.

A reading out of range: EC 2.0 and pH 6.8, with how much water to add and what to do

Included with HarvestMath Garden

Try free Buy, $12

Water and care

How much, how often and on which day, for every zone, tree, shrub and houseplant.

Watering Schedule Builder

$15

Every zone, every minute, every week: your watering worked out, minus the rain.

Half an inch of rain logged: every zone shortened to match

Built into HarvestMath Garden

Try free Buy, $15

Tree & Shrub Care Planner

$12

From planting day to established: how much water, where, and when for every tree and shrub.

Today's watering: 2 to 3 gallons for a new red maple, 1¼ to 1⅔ for the hydrangeas

Included with HarvestMath Garden

Try free Buy, $12

Houseplant Care App

$12

Water, feed and repot each houseplant on its own rhythm, with the right pot and mix.

Today's list: water checks and feedings for each plant, with what to do

Included with HarvestMath Garden

Try free Buy, $12

When something goes wrong

Yellow leaves, spots, wilting or no fruit: find the likely cause, fix one thing and check back.

Plant Doctor

$12

Answer a few questions, get the likely cause, fix one thing, and check back.

The most likely cause (nitrogen shortage), the one thing to change, and when to look again

  • 8 symptom groups for vegetables, herbs and houseplants
  • Causes ranked cheapest and most common first
  • The one thing to change, and when to look again
  • Case tracking that moves to the next suspect if the fix didn't work

Included with HarvestMath Garden

Buy, $12 Try free

How it works

  1. 1

    Try it free

    Every app has a demo: the real app with a cap. Nothing you enter is saved.

  2. 2

    Pay once

    PayPal or a card. Your download opens right away, and an email with your links follows.

  3. 3

    Keep it

    One file that works offline, plus a copy for your phone. No account, no subscription.

Questions

Anything else, ask us. A real person answers.

Ask us a question
Which one should I get?

If you grow vegetables in beds or pots, get HarvestMath Garden: it plans the whole garden and every app on this page comes with it, $49 for all of it. If you only need one job done, like a lawn plan or houseplant reminders, the single app for that job is cheaper.

What does HarvestMath Garden include?

HarvestMath Garden itself, plus 12-Month Lawn Program, Tree & Shrub Care Planner, Houseplant Care App, Hydro Reservoir Manager and Plant Doctor, each as a file you keep and an installable copy for your phone. Feeding Planner, Season Planner, Companion Bed Designer, Bed & Bag Planner and Watering Schedule Builder aren't separate downloads: they're built into the Garden. Bought one by one, the ten single apps come to $144.

I already bought one app. Can I still get the Garden?

Yes. What you paid for single apps comes off the Garden's $49, each purchase counted once, and it never costs less than $30. Open the upgrade link in your receipt email: it fills in your order and shows your price before you pay.

Is it a subscription?

No. You pay once and keep the files. There is no account, nothing to renew and nothing to cancel.

Can I try them first?

Yes. Every app has a free demo: the real app with a cap (the Garden's is 2 beds), and nothing you enter is saved. Buying removes the cap and keeps what you build.

What happens after I pay?

Your download opens right away on the next page, and an email follows with your download links and an installable copy for your phone. Each app is a single HTML file that works offline on Windows, Mac, iPhone, Android and tablets.

How can I pay?

With PayPal, or a debit or credit card (card checkout also takes Apple Pay and Google Pay). The price shown is what you pay, with any sales tax or VAT included.

Is there a refund?

No refunds for a change of mind: the demos and screenshots are the real apps, so you can see how each one works before you pay. If something is broken, or you were charged by mistake, email hello@harvestmath.com and we'll make it right.

The whole garden, worked out, for $49.

Try the real app free first. Nothing to sign up for.

Get Garden, $49 Try Garden free