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 March Gardener's Calendar


It may be difficult to keep to a schedule in March, as the weather can be so fickle. Generally, you can enjoy the beautiful spring perennials such as Bergenia, Rock Cress and Aubrietia. 

 British Summer Time, at the end of March, highlights the approach of summer and hopefully some warmer spring-like weather and of course longer days. 

Don’t forget to ventilate your greenhouse properly because the higher sun and longer daylight hours can turn it into an oven, but remember to close again as frosts are still occurring.


Sowing and planting

Plant summer flowering bulbs such as Dahlias, Begonias, Agapanthus and Alliums. Bulbs should feel firm to the touch and should be free from mould. Bulbs prefer good drainage, so when planting put a handful of grit at the bottom of the planting hole.

Plant herbaceous perennials such as Geranium, Anemones, Aquilegia and Hellebores.  Spring is an ideal time to plant perennials and also to consider what may complement your existing borders.  Now is the time to order these perennials.

Sow summer bedding plants under glass or in a heated propagator.  A great range of summer bedding plant seeds is available now at Jersey Plants Direct.  Or if you don’t have a greenhouse order plug bedding plants and let us do the hard work for you. 

If you didn’t have time to sow Sweet Peas indoors earlier in the year, don’t worry, you can now sow them outside if you live in a part of the UK with milder weather.  Sweet Peas are easy to grow and by July you should be enjoying the scent and colours of these wonderful flowers.


Tidy your garden – Cut back, prune and divide. 

Dead head early spring bulbs such as daffodils, leaving the foliage to die down naturally.This will help the bulbs put their energies into next year’s displays instead of making seed. Also, dead head winter flowering pansies and other winter bedding.  Pansies will continue to flower well into Spring and even early summer if attended to frequently.

Cut back ornamental grasses and other perennials that have been left for their winter interest. March is your last chance to prune summer flowering deciduous shrubs such as Buddleia, Lavatera and Hydrangea. This will help rejuvenate them and bring them into flower in the summer.

Divide Snowdrops, Hellebores and Polyanthus-type Primulas after flowering. 

Now is the best time to dig up your Hostas and divide them.   Gently loosen the soil around the Hosta clump and then lift it using your fork.  Split the clump and make sure you plant them straight away to avoid the roots drying out.

Prune your Roses for best results. Remove dead and damaged wood and cut diseased stems back to healthy growth. You can cut any Rose bush and hedge back by up to a half. 


March Garden Maintenance

Deal with weeds, which are starting to burst into growth, just like everything else in your garden.  A hoe makes short work of clearing a large area.  Always hoe on a sunny, dry day to prevent the weeds re-growing.

Mulch helps keep down weeds and maintains a cool and moist soil. This month mulch and add organic matter to heavy clay soils. Compost or shredded leaves are good because they add nutrients to the soil. You can improve the drainage of your soil by working in plenty of organic matter.

Feed borders with a general-purpose fertiliser to add the nutrients your plants need for healthy growth.



Continue to protect plants from frost.If the weather is mild remove winter coverings but make sure the risk of frost has passed. If frost is forecast, use fleece to protect the new leaves.

Make sure new growth on Lilies and Delphiniums are protected from slugs and snails.These pests love Hostas, which are just starting to grow. They will go for the kill and take the shots before the leaves open. A good tip is to use some beer or citrus skins daily to trap them. Alternatively, try our slug control available on this site.


Plant Onions, Shallots and Garlic set outdoors. Harden off and plant out Broad Beans, Peas, Garlic and Shallots that have been raised in a greenhouse. Protect if there is a risk of frost.

Plant your Early Potatoes such as Pentland Javelin and Red Duke of York. Jersey Plants Direct has a selection of some of the country’s best-loved potatoes. Keep an eye on the weather, watch out for frost warnings and ensure that you continue to water if there is a lack of rain!

Sow seed indoors for Tomatoes, Sweet Peppers, Salad and Courgettes. There are plenty of varieties of Tomatoes to grow. Now, hardier varieties can be grown outdoors, but remember they are native to a hot climate. Jersey Plants Direct has lots of vegetable seeds for you but also a range of jumbo plants if you would rather let us do the hard work for you!

Prepare supports for Peas and Runner Beans.

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Registered Office: 1st Floor Nelson House, David Place, St Helier, Jersey, JE2 4TD

TEL: 01534 871113


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