April is one of the most important months in the UK gardening calendar. Soil is finally warming up, daylight hours are long enough for strong plant growth, and many crops can now be sown directly outdoors for the first time in the year.
For allotment holders, home gardeners and beginners alike, April represents a major shift from indoor seed starting to active outdoor growing. It’s the month when gardens start to fill with life.
In this guide, we’ll explore exactly what to sow in April in the UK, including vegetables, herbs and flowers that thrive in spring conditions.
Quick Answer: What Can You Sow in April?
April offers one of the widest ranges of sowing opportunities of the year. Popular crops to sow in April include:
April is also a key month for succession sowing, ensuring continuous harvests later in the season.
Vegetables to Sow in April
Carrots
April is a peak month for carrot sowing in the UK.
Key tips:
- Sow directly outdoors
- Choose light, stone-free soil
- Avoid transplanting seedlings
Recommended varieties: Nantes, Chantenay, Early Nantes, Autumn King.
Carrots sown in April often provide strong, reliable summer harvests.
Beetroot
Beetroot is one of the easiest and most productive crops for April sowing.
Benefits:
- Fast germination
- Reliable growth
- Multiple harvest windows
Popular varieties: Boltardy, Detroit Globe, Chioggia (candy-striped).
Parsnips
April is often the final chance to sow parsnips for the year.
They require:
- Deep, loose soil
- Patience (slow germination)
- Consistent moisture
Parsnips sown now will develop into strong winter crops.
Radishes
One of the fastest crops you can grow.
April sowings can be harvested in as little as 3–6 weeks.
Perfect for:
- Beginners
- Succession planting
- Small spaces
Lettuce
April is ideal for both direct sowing and module planting.
Good varieties: Little Gem, Lollo Rosso, Salad Bowl, Romaine types.
Successional sowing ensures continuous harvests.
Spinach
Spinach thrives in cool spring conditions and grows quickly in April.
Spring Onions
A reliable crop that can be sown repeatedly throughout April for ongoing harvests.
Peas
April is a prime month for pea sowing in most UK regions.
Recommended varieties: Kelvedon Wonder, Hurst Green Shaft, Meteor.
Support plants with netting or canes.
Broad Beans
Early sowings are still possible in April, especially in cooler northern regions.
French Beans
In milder areas, late April is the start of French bean sowing under cover or outdoors if frost risk is low.
Sweetcorn
Sweetcorn can be sown indoors in April for planting out later in spring.
Brassicas to Sow in April
Brassicas become increasingly important in April sowing schedules.
Cabbage
- Summer cabbage varieties
- Fast-growing types for autumn harvests
Kale
Highly reliable and productive, ideal for continuous harvesting.
Broccoli (Calabrese)
Quick-growing varieties can be sown in April for summer crops.
Cauliflower
Early and mid-season varieties can be started this month.
Indoor Sowing in April
Some crops still require protection from cold temperatures.
Courgettes
One of the most productive summer vegetables.
- Sow indoors
- Keep warm and bright
- Plant out after frost risk
Pumpkins and Squash
April sowings give long growing seasons for larger fruits.
Cucumbers
Best started indoors or in heated propagators.
Tomatoes
If not already sown in March, April is still suitable, though earlier sowings often perform better.
Herbs to Sow in April
Herbs are easy and rewarding crops for April sowing.
Parsley
Slow to germinate but very reliable.
Coriander
Best sown in small batches to avoid bolting.
Dill
Great for salads and companion planting.
Basil
Still best started indoors due to warmth requirements.
Chives
Perennial herb that thrives in containers and borders.
Flowers to Sow in April
April is a fantastic month for flowering plants.
Sunflowers
One of the easiest and most rewarding flowers to grow.
Cosmos
Attracts pollinators and produces long-lasting blooms.
Nasturtiums
Edible flowers that also help deter pests.
Marigolds (Calendula)
Excellent for companion planting and pollinators.
Sweet Peas
Final sowing window for strong summer flowering.
Zinnias
Bright, colourful flowers for beds and containers.
Cornflowers
Perfect for wildlife-friendly gardens.
What Can Be Planted Outdoors in April?
April allows planting of:
- Onion sets
- Shallots
- Garlic (late plantings)
- Seed potatoes (earlies and second earlies)
- Bare-root plants (early April only)
- Strawberry runners
MyGrowPal flags frost-risk days on your growing calendar. Set your UK postcode and the app adjusts sowing and planting-out dates to your local conditions — so you're not caught out by an unseasonable April cold snap.
April Gardening Jobs
Prepare Soil for Heavy Growth
Add compost or well-rotted manure to beds before peak planting begins.
Harden Off Seedlings
Gradually acclimatise indoor-grown plants to outdoor conditions.
Install Supports Early
Prepare structures for: Peas, Beans, Sweet peas.
Start Succession Sowing Plans
Key crops for repeated sowing: Lettuce, Radishes, Spring onions, Beetroot.
Weed Control
Weeds grow rapidly in April—early control prevents future problems.
Common April Sowing Mistakes
Planting Too Early Outdoors
Soil may look warm, but cold snaps can still occur.
Overcrowding Seedlings
Crowded plants compete for light and nutrients.
Ignoring Succession Sowing
Without planning, harvests become uneven and short-lived.
Forgetting Watering Consistency
April sun and wind can dry soil faster than expected.
Using MyGrowPal to Plan April Sowing
April is one of the busiest months for UK gardeners, with dozens of crops, sowing windows and outdoor tasks happening at once. MyGrowPal helps simplify this complexity by turning your seed collection into a personalised growing system.
Frequently Asked Questions
Is April a good month to start a vegetable garden in the UK?
Yes. April is one of the best months to begin direct sowing outdoors.
Can I sow carrots in April?
Absolutely. April is one of the peak months for carrot sowing.
Is it too late to sow tomatoes in April?
No, but earlier sowing in March is ideal for a longer season.
What flowers can I sow in April?
Sunflowers, cosmos, nasturtiums, marigolds and zinnias are all excellent choices.
Can I plant potatoes in April?
Yes. April is a prime month for planting seed potatoes in most UK regions.
Final Thoughts
April is the month when UK gardens truly come alive. With warming soil, longer days and a wide variety of crops ready for sowing, it is one of the most productive periods of the entire gardening year.
By combining indoor seed starting with direct outdoor sowing, gardeners can build strong foundations for summer harvests.
And if you want to stay organised through this busy period, MyGrowPal helps you track everything from seed packets and sowing dates to weather alerts and garden planning—so you can spend less time planning and more time growing.