Are you growing vegetables this year?  To follow on from March’s sowing guide, here is a list of vegetable seeds to sow in April, as well as some handy growing tips. 

Seeds to Sow Outside in April

seeds to sow outside in April

You can sow the following seeds straight outside in April: beetroot, peas, cabbage, carrots, kale, leeks, spinach, rocket, broccoli, broad beans, brussels sprouts, cauliflower, chard, kohlrabi, beet spinach, lettuce, and radish. Here are tips on how to grow them.

Beetroot

Sow your seeds 1cm deep into the soil. Space the seeds 10 cm apart, with 30 cm between rows.

Peas

Make a flat-bottomed trench around 5cm deep and 15cm wide. Sow the seeds evenly in the trench about 7.5 cm apart, before covering them with a light layer of soil.  If you sow a second row, space it at a distance equal to the height of the final pea crop.

Cabbage

Sow cabbage seeds in April at a depth of 2cm, 25 cm apart.  Leave 30 cm between rows.

Carrots

Thinly sow the seeds, at a depth of 1cm, in rows 15–30 cm apart. Thin out seedlings if necessary – you should aim for your carrot plants to be 5 – 7.5cm apart.

Kale

Sow at a depth of 1 cm, leaving 60 cm between seeds and rows.

Leeks

Sow at a depth of 1 cm, 15 cm apart.  Leave 30 cm between rows.

Spinach

Sow your seeds 2.5cm apart, at a depth of 1cm.  Leave 30 cm between rows.

Rocket

Sow your seeds thinly, at a depth of 0.5 – 1cm.  Leave 15 cm between rows.  When the seedlings appear, thin them to make sure plants are 15cm apart.

Broccoli

Sow three seeds 2cm deep, leaving 30cm between each row.

Broad Beans

Sow seeds in April at a depth of 5cm, with 20cm between each seed. They are best sown in double rows, with the rows 20cm part. 

Brussels Sprouts

Sow seeds thinly at a depth of 13mm, with 15cm between rows. 

Cauliflower

Sow seeds thinly at a depth of 2cm. Depending on the size of the variety you’re growing, rows should be between 15 cm apart for small varieties to 60 cm apart for larger ones.

Chard

Sow seeds at a depth of 2.5cm, with 10cm between each seed, in rows 45cm apart.

Kohl Rabi

Sow these seeds in April at 1 cm deep in rows 30 cm apart.

Beet Spinach

Sow your seeds 2.5cm apart, at a depth of 1cm.  Leave 30 cm between rows.

Lettuce

Sow thinly at a depth of 1cm, leaving 30 cm between rows.

Radish

Sow seeds thinly at a depth of 1cm, with a spacing of around 2.5 cm between each seed.  If sowing in rows, aim for 15 cm between each row.

Seeds to Sow Undercover In April

seeds to sow undercover in april

You can sow seeds for french beans, lettuce, and sweetcorn undercover in April. Here are some useful planting tips:

French Beans

Sow French beans in small pots, sowing one bean in each, planted at a depth of 5cm deep. Place the pots in a cold frame, or another sheltered and warm spot.  

Lettuce 

Sow seeds in April, thinly at a depth of 13mm, in rows 30cm apart, and cover with a cloche or tunnel.  

Sweetcorn

Grow sweetcorn in a warm, sheltered, sunny position, protected from strong winds.  I find a polytunnel works best.  Sweetcorn is pollinated by the wind, therefore seeds should be sown in blocks rather than rows, 45cm apart. Try sowing two or three seeds at each point, then thin out the extra seedlings to leave just the strongest one.

Seeds to Sow in Heat in April

seeds to sow in heat in April

In April you can sow aubergine, cucumber, celery, and tomato seeds in heat. Again, here are some useful sowing tips for each vegetable:

Aubergine

Sow these seeds at 18-21°C in small pots.

Cucumbers

Sow cucumber seeds on their side, at a depth of 1cm, in small pots. Keep them warm in a heated propagator, greenhouse, or on a sunny indoor windowsill.

Celery

Sow celery seeds thinly in seed trays or pots of moist compost at 15°C. Then apply a very light covering of fine vermiculite or sieved compost. Transplant the young seedlings into 7.5 cm pots when several true leaves appear. 

Tomatoes

Sow in small pots, then either place in a propagator or cover each pot with a clear plastic bag and place on a sunny windowsill. The seedlings need to be kept at around 18°C. Once two true leaves have formed, transplant them into 9cm pots.

What Seeds Are You Growing In April?

produce in season in february

I’m curious to know – what are you sowing this month? I’m going to try and get a few seedlings going on our windowsill this month, and I’ll keep you updated!  There is a lot of choice when it comes to what seeds to sow in April, so I’m struggling to narrow down exactly what to sow!

Happy growing!

ps: I have lots of other useful gardening guides on Moral Fibres.  From some great sustainable garden ideas to why you should choose peat-free compost.

And if you’ve found this page through your search engine then you may be interested in May’s sowing guide for next month. For future reference, you may also be interested in my March sowing guide!  Bookmark them for later!

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Person planting seeds with blue text box that says the seeds to sow in April for a successful crop.

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