Frequently asked questions

Help with planting dates, choosing a growing guide and keeping track of your garden.

Getting started

What does When to Plant help me do?

Find when to sow, plant out and harvest in your part of the UK. Choose your town, browse plants and follow a growing guide that suits your setup. With an account, you can keep a garden with its own plants, jobs and notes.

Can I use it for a balcony or an allotment?

Yes. Your growing space might be a few pots, a back garden or an allotment. Choose guides that suit how you're growing, whether that's starting seeds indoors or sowing straight outside.

Do I need an account?

You can browse plants, growing guides and local planting calendars without signing up. A free account lets you save favourites and create a garden to keep track of what you're growing.

Locations and planting dates

How do I get dates for my area?

Open the location picker and search for your town, or choose ‘Use my location’. Pick the closest suitable town if yours isn't listed. Each saved garden also has its own location, so check the garden settings if its dates don't look right.

Where do the planting dates come from?

Local planting windows use historical frost dates and the needs of each plant. The frost information comes from Met Office HadUK-Grid climate data. The windows give you a useful starting point for planning your season.

What if I haven’t chosen a location?

UK-wide calendars give approximate planting windows. They aren't calibrated to your garden. Choose a town for local dates, and look out for any indication that a schedule is using approximate dates where local frost information is unavailable.

Does a planting date mean it’s safe to plant outside?

No. Historical frost dates describe typical conditions, not this week's weather. Check the local forecast and the conditions in your garden before planting out tender plants. A sheltered patio and an exposed allotment can need different decisions, even in the same town.

Does it work outside the UK?

The location-based calendars are designed for UK gardens. You can still read the growing guides elsewhere, but the planting dates may not suit your climate.

Choosing what to grow

Why does a plant have more than one guide?

There can be several ways to grow the same plant, such as starting seeds indoors or sowing directly outside. Each guide has its own steps and timing. Pick the method that matches your space and how you want to start.

What does a growing guide include?

A guide takes you through the jobs for that growing method, with suggested time windows and instructions. Depending on the plant, these can include sowing, hardening off, planting out, ongoing care and harvesting.

How should I use the companion planting advice?

Use it as a suggestion when planning your beds. Results vary, and a good neighbour won't make up for too little light, water or space. Give each plant the growing conditions it needs first.

What’s the difference between favourites and a garden wishlist?

Favourites are plants you'd like to find again. A garden wishlist keeps ideas for a particular growing space. When you're ready to grow something, add it to the garden with a growing guide to give it a schedule.

Planning and keeping track

What is a saved garden?

It's a record of a growing space, with its own location, plants and jobs. You can keep separate gardens for different places, subject to your plan's garden limit.

What happens when I add a plant to my garden?

Choose a growing guide and tell us when you're starting. The plant gets a schedule you can follow in your garden. If you've already started growing it, use the options in the form to describe where you've got to.

Can I plan where plants will go?

Yes. The garden planner lets you create beds and place plants in them. Use it to work out your layout alongside the calendar, which shows when the growing jobs fall.

Can I tick off jobs or skip one?

Yes. Mark a job as done when you've finished it, or skip it if it doesn't apply. You can record the date you actually did the job, so you don't have to update the site with muddy hands.

What if I do a job earlier or later than planned?

Record when you actually completed it. Later steps that depend on that job can adjust to the new date. The schedule is still a guide: a late sowing doesn't guarantee there'll be enough warmth left for a harvest.

Can I keep notes and photos?

You can log activities such as watering, feeding and harvesting, add notes and attach a photo. Open a plant in your garden to see its activity history. How much past history you can view depends on the garden owner's plan.

Email updates and sharing

Can I get reminders by email?

In your account's notification settings, choose a weekly or monthly garden digest, or turn it off. You can also enable frost warning emails for tender plants in your garden. Keep checking the local forecast yourself when frost would put your plants at risk.

Can someone else help manage my garden?

If your plan includes collaborators, you can invite someone to your garden. A viewer can see it, while an editor can help make changes. The garden owner manages invitations and access.

Accounts and plans

Is When to Plant free?

Browsing the planting calendars and guides is free, and there's a free account plan for keeping a garden. The pricing page lists the plans currently available, including garden and plant limits, history access and sharing. Check there for the current details before choosing a plan.

How do I manage a subscription?

If you have a paid subscription, open the subscription section of your account to manage billing or cancel. Cancellation takes effect at the end of the billing period you've already paid for.

What changes if I return to the free plan?

The free plan's limits apply again, including limits on adding gardens and active plants. Access to older activity history and sharing also depends on the plan, so check the current details before changing your subscription.

When something doesn’t look right

What should I check if the dates look wrong?

Start with these checks. If something still seems off, send the plant name, growing guide and town through the contact page.

  • Check the town shown on the page, or the location saved in your garden.
  • Make sure the guide matches your growing method, such as starting indoors or sowing outside.
  • For a saved plant, check its starting date and any jobs you've marked as done.
  • Check whether the dates are local or approximate, and compare them with conditions in your garden.

Can I suggest a plant or report a mistake?

Please do. Use the contact page to send the plant name and what you'd like to see, or tell us which page needs correcting. If it's a timing problem, include your town and the date that looked wrong. It helps us work out what's happened.

Still have questions?

Send us a question, suggest a plant or tell us about something that needs fixing.

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