Frost and weather alerts for the plants at risk
Folly is a plant care app that warns you before frost, heat, wind or a storm reaches your plants. It watches the forecast for each place you grow and works out which of your own plants are at risk, so the alert names them rather than giving you a general weather warning.
Free users get the alert itself. Folly Pro adds the plain-language briefing and a protection checklist for each plant: what to move, what to cover and what to water first.
Free on every plan
- An alert when frost, heat, wind or a storm threatens your plants, naming the plant when one is at risk
- Up to 5 growing sites, each with its own location and local weather
- Alerts re-checked straight away when you move a plant outdoors or bring it inside
- Local weather on Home from the first day
With Folly Pro
- A plain-language briefing for every alert
- A protection checklist for each plant at risk
- Smart Care schedules that also adapt watering to the weather
Folly is free to download and the free plan is permanent. Folly Pro is £7.99 a month or £39.99 a year, and new users can try a free week of Folly Pro on the yearly plan. Compare the plans.
How it works
- 1
Set where you grow
Give each growing site its location: a flat, a garden, an allotment, a greenhouse. Up to 5, free.
- 2
Folly watches the forecast
It checks the weather for every site and works out which of your plants a frost, heatwave, wind or storm would hurt.
- 3
Act before it arrives
The alert names the plants at risk. On Folly Pro, a checklist says what to do for each one.
Alerts that name your plants
A weather app tells you it will be cold tonight. It does not know that the lemon tree is still on the patio and the dahlias have not been lifted. Folly does, because it knows which plants are in which growing site and room. When frost, heat, wind or a storm is on the way, it works out which of your plants are actually at risk and names them.
On Folly Pro each alert comes with a plain-language briefing and a step-by-step checklist for each plant involved, so you know what to do before the weather arrives.
One app for every place you grow
A windowsill in a warm flat and a greenhouse two miles away are different places with different weather. Folly lets you run up to 5 growing sites, each with its own location and its own forecast, and up to 20 rooms in each, on the free plan. Alerts are worked out site by site, so the allotment gets its own warning rather than sharing your home's.
Plants move, and the alerts follow them. Carry a plant outdoors for the summer or bring it in for the winter, and its alerts are re-checked straight away rather than at the next scheduled check.
Frost, heat, wind and storms
Frost is the warning most gardeners want, and the one that matters most in spring and autumn when tender plants are outside. Folly also warns before heatwaves, which scorch leaves and dry pots out within a day, and before strong wind and storms, which snap stems and topple pots.
On Folly Pro, the same forecast feeds Smart Care, so watering intervals tighten in a hot spell and stretch when it turns cool.
Questions people ask
Is there an app that warns me about frost for my plants?
Yes. Folly watches the forecast for each place you grow and sends an alert before frost, heat, wind or storms, naming the plants at risk. Folly Pro adds a protection checklist for each one.
Are Folly's frost alerts free?
The alert is free: Folly tells you when the weather threatens your plants, and names the plant when one is at risk. The briefing and the protection checklist for each plant are part of Folly Pro.
Can I get alerts for an allotment or a second garden?
Yes. Folly runs up to 5 growing sites on every plan, each with its own location and weather, and works out alerts for each site separately.
Does Folly warn about heatwaves as well as frost?
Yes. Folly warns before frost, heat, strong wind and storms, and on Folly Pro the same forecast adapts each plant's watering to the weather.
Does it work outside the UK?
Yes. Alerts use the forecast for the location you give each growing site, so they work wherever you grow, in either hemisphere.
