Disclosure: This post may contain affiliate links, meaning I get commission if you decide to make a purchase through my links, at no cost to you. Please read my Affiliate Disclosure for more information.
If you’re new to growing flowers and wondering when to start a cut flower garden, you’re not alone. Timing is one of the most confusing parts for beginners – especially when advice online often feels contradictory or overwhelming.
The reassuring truth is this: there is always something you can grow, almost every month of the year. Once you understand how the seasons work together, starting a cut flower garden becomes far simpler – and far less stressful.
This guide will walk you through the best time to start a cut flower garden for beginners, what to grow in each season, and how to plan ahead for a longer flowering period without doing more work.
When is the Best Time to Start a Cut Flower Garden for Beginners?
There isn’t one single “perfect” time to start a cut flower garden – but there are better times for specific flowers.
Three questions. Two minutes. A flower list chosen for your actual garden, not some idealised one.
Let’s find your flowers.
Some things are best avoided (tender annuals sown in November, for example), but no matter when you decide to begin, there will always be suitable flowers you can grow.
What many beginners don’t realise is that:
A successful cut flower garden usually starts the year before.
Once you’ve decided to grow flowers, planning ahead allows you to extend your blooming season significantly. By sowing biennials in early summer and hardy annuals in autumn, you’ll have strong plants already established before spring arrives. Spring sowings then simply top up what you already have growing.
This spreads the workload out across the year and makes spring feel calmer and more manageable.
Understanding Frost Dates in the UK
Knowing your local frost dates makes deciding when to start growing cut flowers much easier.
In most parts of the UK:
- The last frost is usually around mid-May
- The first frost can arrive from mid-October
These dates don’t need to be exact – they’re simply guideposts to help you decide what can be sown outdoors and when.
Is Succession Sowing Necessary for Cut Flowers?
Succession sowing (sowing the same seeds every few weeks) is often recommended, but it’s optional.
It suits keen gardeners who enjoy regular sowing and ongoing maintenance. I prefer a lower-effort approach: sowing different flowers in different seasons instead.
By spreading sowing across summer, autumn, winter and spring, you naturally stagger flowering times without needing to resow constantly. Each season’s sowing can usually be done in one focused session, then gently looked after as the plants grow.
This approach also reduces spring overwhelm, as many seedlings are already established.
What to Plant in Summer (June-August)
Biennials for Early Flowers Next Year
Early summer is the ideal time to sow biennials. Biennials have a two-season lifecycle. During the summer, their roots will establish themselves. Then, a cold snap in the winter encourages the flowering stems for the following spring and summer – filling the gap between spring bulbs and summer annuals.
Beginner-friendly biennials include:
If you want plenty of flowers without turning gardening into a second job, The Flower Files might be just what you need.
- Foxgloves
- Campanula
- Honesty
- Sweet rocket
Annuals and Days to Maturity
When sowing annual flowers in summer, Days to Maturity is key.
Some flowers germinate quickly but take a long time to flower. Cosmos and zinnias are good examples. Although they sprout fast, spring-sown seeds of these varieties often don’t flower properly until late August – but once they start, they’ll flower continuously until the first frosts.
Personally, I stop sowing annuals for flowers in the same year by early June. After that point, I focus on sowing for the following season. It feels more predictable and far less pressured – but experimentation is always welcome.
What to Plant in Autumn (September-November)
Autumn is one of the best times to start a cut flower garden – especially for beginners.
Hardy Annuals
Hardy annuals sown in late summer or early autumn will overwinter and flower earlier the following spring. Sow the seeds by October to give them time to germinate and establish strong enough plants to withstand winter.
Good options include:
Once sown, you may well find that many of these readily volunteer many self-sown seedlings year after year and you never need sow them again.
Bulbs and Corms
Autumn is also prime bulb-planting season:
- Alliums and daffodils: September–October
- Tulips: November to January
Anemones and ranunculus can also be planted in autumn, ideally early enough to establish before hard frosts.
Perennials, Trees and Shrubs
Autumn is also an excellent time for you to plant perennials, trees, and shrubs. The ground will still be warm from the summer, and they will stay well hydrated over the winter. This is often better than planting in spring, as it is easier to keep them hydrated to get them established.
What to Plant in Winter (December-February)
Winter offers fewer options, but it’s not a dead stop.
- Tulips and ranunculus can still be planted – Tulips can be planted in January, as they only need about three months to grow.
- Perennial seeds can be sown anytime – Achillea and feverfew are particularly generous and may even flower in their first season if started early enough.
- Hardy annuals can be sown under cover.
Hardy annuals are frost-tolerant, so they can be sown under cover in January or February. However, you may want to wait until spring for more warmth and better light levels, as you won’t be able to plant them out any sooner.
I’ve recently started a new year tradition of sowing some larkspur, snapdragons and orlaya on New Year’s day. This sets my intention for growth and also gives these tricky seeds a bit of a cold snap (which they like) without the complications of cold stratification. The results have been great, and I had an abundance of flowers in June last year.
If the ground isn’t frozen, you can also still plant perennials, trees, and shrubs.
What to Plant in Spring (March-May)
Spring is when most beginners naturally start a cut flower garden.
- Hardy annuals can be sown from March
- Half-hardy annuals follow once temperatures rise
- Zinnias are best sown in April or May
- Dahlia tubers can be started under cover but planted out after the last frost
Spring is also suitable for planting perennials, though extra watering will be needed as temperatures rise.
What Counts as a Cut Flower?
Any flower can be used as a cut flower – as long as you’re willing to cut it.
This is why many gardeners prefer a dedicated cutting patch. You’re far more relaxed about harvesting generously when you’re not worrying about the garden looking bare.
If space is limited, planting one extra plant in a grouping specifically for cutting is often enough to enjoy flowers indoors without spoiling your garden display. Cut flowers tend to be planted closer together than is usually advised and suffer no harm.
Using Perennials for Reliable Cut Flowers
Perennials are a long-term investment, but they offer excellent consistency.
While newly planted perennials take time to establish, once they’re settled they return reliably each year with very little effort.
Lupins and delphiniums grown from seed often flower well in their second year and continue for many seasons. Achillea and feverfew can even flower in their first year if started early.
Many perennials (including delphiniums, lupins, achillea and feverfew) can be cut back after their first flush to encourage a second round of flowers later in the year.
When Should You Start a Cut Flower Garden?
If you’re wondering when to start a cut flower garden for beginners, the answer is simple:
Now is a good time.
Start with one season. One tray of seeds. One small patch. Planning ahead will naturally come with experience.
If you’d like help deciding what to grow first – without trying to do everything at once – you can download my printable guide Where to Begin Growing Cut Flowers inside the Flower Files.
You can also find more examples of what to grow in your cutting garden here.
You don’t need perfection. You just need a place to begin.
The key is to plan ahead and have realistic expectations and make sure you have the right tools ready.
Once you’ve had a few seasons of experience, you’ll be well prepared to take full advantage of all the options available to extend your growing season.
Learn more about how to start and grow a cut flower garden in this series of blog posts:
- The 9 Benefits of Starting a Cutting Garden
- How to Start a Cut Flower Garden – 7 easy steps
- What’s the Best Cutting Garden Layout: How Much Space Do You Need?
- The Tools You Need to Create a Cut Flower Garden
- Cutting Garden Plan: What Makes a Good Cut Flower Garden
- When to Start a Cut Flower Garden For Beginners
- How to Grow Flowers For Cutting: Flower Bed Maintenance
- Flower Bed Maintenance: A Guide To Watering
And if you want to do it with the minimum of trouble find out the mistakes I made in starting my flower patch.
A quick aside: I built a little app for flower growers who want gentle reminders about what to do and when - without it turning into another thing to feel guilty about. It's called the Flower Grower Companion. You tell it your location and your flowers, it tells you what actually needs doing this week (and just as importantly, when there's nothing to do at all)
Have a look
