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Seeds To Sow In May!

We have put together a list of all the seeds available at that you can start sowing in May. There are so many delicious, organic vegetables you can start growing and beautiful flowers to brighten up your garden! 

We have even included some helpful growing tips for you!


Grow your own fresh Spinach at home.  Perfect in our opinion with almost anything, such as pasta, salads, quiches, smoothies, and more!

When to sow: February to May and August to September, or indoors all year round!

When to harvest: 6 weeks after planting your seeds.

Spinach plants don’t like to be in harsh, midday sun. If you would like a crop through the high summer months remember to pick a spot where they will be protected.


Radishes are great grilled, roasted, pickled and raw. They are also great in salads, soups and more!  

When to sow: Outdoors March to August, or in a greenhouse or similar, January to March, and September to October. 

When to harvest: Can be ready in as little as 4 weeks!

 Fun fact: Radishes, onions and garlic were paid as ‘wages’ to the Ancient Egyptian labourers who built the pyramids.


What could be better than homegrown Cucumbers in your delicious summer salads! Organic Marketmore cucumbers are a popular, ridged, outdoor cucumber variety. 

When to sow: February to May.

When to harvest: Approximately 12 weeks after planting.

Top Tip: Harvest your cucumbers early in the morning when it's cooler for better-tasting fruits.


Grow your own delicious, fresh cabbages at home. A very nutritious vegetable that goes perfectly with pork, lamb, beef, chicken and all other poultry. It is extremely versatile and can be cooked in a number of ways, such as sliced and stir-fried, roasted, braised or blanched.

When to sow: May to August.

When to harvest: Approximately 75 days after planting.

Your cabbages will be ready for harvesting approximately 75 days after planting. Harvest by cutting close to ground level with a kitchen knife, if you cut across on the stump a secondary crop of small cabbages can appear from the cut surface.


Grow your own fresh calabrese broccoli at home, a great accompaniment to so many dishes. Broccoli is known for its beneficial health effects, it is high in fibre, vitamin C, vitamin K, iron, potassium and more.  

When to sow: Start indoors in March. Direct sow from April to July.

When to harvest: Harvest June to December.

 Growing fact: Better heads are produced during cooler summers as hot weather can encourage plants to go to seed prematurely.


Leeks are part of the Allium family, along with onions and garlic. When cooked they have a delicate, mild onion flavour with a hint of sweetness. They make a great addition to so many recipes!

When to sow: March to May.

When to harvest: September to February.


This green salad bowl lettuce variety produces large non-hearting heads of tender, green leaves that are slow to bolt. It is ideal for garnishes and makes delicious salads.

When to sow: March to July.

When to harvest: May to September. 

Fun Fact: Harvest your lettuce leaves very early in the morning, and they will be fresher for longer.


Nigella's are easy to grow and will bring some wonderful colour to your garden.

Sow: Sow indoors or undercover, September to November, or outdoors April to August.

Plant Type: Hardy Annual

Excellent cut flower variety. Sow some nigella seeds every 2-3 weeks for a continuous, beautiful display.

Ammi Majus

Ammi Majus is a beautiful, dainty white flower, reminiscent of lacework, which looks wonderful in any garden.

When to sow: March to June, and August to September

Plant Type: Hardy Annual.

Blue Cornflower

Cornflowers are easy to grow and will bring some wonderful colour to your garden. 

Excellent cut flower variety. Sow some cornflower seeds every 2-3 weeks for a continuous, beautiful display.

 When to sow: March to May, and August to October

Plant Type: Hardy Annual


Growing some fragrant herbs indoors, to bring some nature inside and to switch up your meals with fresh ingredients, we have plenty to choose from at Seed n Sow! 

We hope this blog has been helpful and given you some inspiration for what seeds you can start this month and given you some ideas of what you can get up to in the garden!

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