What Not to Do in the Garden in March

Many keen gardeners are ready to get going in March: clear away leaves, rake the beds, mow the lawn, trim the hedge – at last, the gardening season is back. Yet this impression is often misleading. The soil is still cold, animals remain in their winter shelters, and some tasks are restricted by law. Starting too hastily now does neither the garden nor nature any favours.

Leave fallen leaves where they are: why an “untidy” garden is so valuable now

For many people, a garden only looks tidy once every leaf has been removed and every corner has been cleared. From nature’s perspective, however, the reverse is true: an imperfect, slightly wild garden can save the lives of countless animals.

“Fallen leaves, dead stems and small branches are not rubbish: they provide winter shelter, a food store and a protective layer all at once.”

A great deal is happening beneath those seemingly unattractive piles of leaves:

• Insects overwinter in dry leaves and need to remain undisturbed until April.
• Spiders, beetles and woodlice break down the material, helping to create fertile soil.
• From March onwards, small branches provide birds with building material for their nests.
• This organic layer prevents the soil from drying out and protects it against erosion.

Only remove leaves and plant remains that clearly appear diseased – such as mouldy leaves beneath heavily affected roses or perennials. Everything else can stay in place for now. Clearing everything away meticulously at this point removes habitat for birds, hedgehogs and insects, while weakening soil quality in the long term.

Lawn care in March: wait before bringing out the mower

The lawn can be deceptive: it looks green, so many people assume it is ready for mowing. After winter, however, grass roots are often weakened, while the ground is damp and still at risk of frost.

Mowing too early brings several drawbacks:

• The turf is put under strain when the soil remains soft and wet.
• Wheels and footsteps compact the ground, which can lead to bare or mossy patches.
• Blades of grass may suffer frost damage if cold nights return after mild days.

Use a few straightforward signs as a guide before you begin:

• The grass is around five to seven centimetres tall.
• The surface has dried properly, with no mud or standing water.
• Daytime temperatures consistently sit at roughly 7 to 10 degrees, and night-time temperatures rarely fall below zero.

In many areas, the first cut is best left until between mid-March and early April. Colder locations should generally wait a little longer. Patience now will reward you with a denser, healthier lawn in spring.

Do not rush to loosen or sow garden beds

As soon as the sun appears, many gardeners reach for the rake, cultivator and seed packets. It is tempting to prepare beds “properly” straight away, but soil is particularly sensitive at this stage.

Deep cultivation disrupts dormant phases and damages important structures:

• Fine roots from perennials, grasses and young plants can be torn away.
• Beneficial creatures, including earthworms, beetle larvae and wild bees, can be pulled out of their protected spaces.
• Soil that has been raked loose but remains cold effectively invites fungi and pests.

“In March, treat beds gently: loosen them lightly rather than digging them over. Major work is best delayed until the soil has genuinely warmed up.”

If you want to do something already, limit your efforts to areas that are particularly compacted. You can carefully lift these with a garden fork without turning over the entire bed. Direct sowing outdoors is worthwhile in many areas only once the soil no longer feels icy and feels pleasantly cool in the hand rather than cold and clammy.

Sowing to postpone in March

Sensitive vegetables and delicate summer flowers cope poorly with cold conditions outdoors. March is usually still too early outside for the following:

• Tomatoes, peppers and chillies
• Courgettes, pumpkins and cucumbers
• Dahlias (as tubers) and sensitive summer-flowering plants

Rushing these plants can result in stunted growth or complete failure. It is better to start them indoors or in a greenhouse, or simply wait a few more weeks.

Fertilising and planting: frost disrupts many plans

Mild days in March are tempting: scatter fertiliser quickly, plant new perennials or perhaps fill a few containers. Night-time conditions often tell a different story, though. Late frosts into April are normal in many areas.

What happens when you push ahead too quickly?

• Fertiliser encourages growth, causing plants to produce soft, vulnerable new shoots.
• When temperatures drop, fresh shoots and buds can freeze.
• The plant then has to use energy for recovery and grows less strongly over the year.

“It is better to begin a little later but strongly than to start early and struggle through the rest of the season weakened.”

There is still one useful small job you can do: apply a thin mulch layer of leaves, last year’s grass cuttings or shredded prunings. It protects the soil, retains moisture and moderates temperature swings slightly without putting plants under stress.

Hedges and shrubs: what is prohibited from 1 March

One point many keen gardeners miss is that heavy pruning of hedges and shrubs is regulated by law. From 1 March to 30 September, the German Federal Nature Conservation Act prohibits radical cutting of hedges, bushes and woody plants.

The reason is clear: from March, birds search for nesting sites, start building nests and raise their first brood. Dense hedges also shelter hedgehogs and many insect species. Anyone sawing, cutting or clearing large areas now destroys breeding sites and places of refuge.

What does this mean in practical gardening terms?

Task	Permitted in March?	Note
Radical hedge cutting (cutting back heavily)	No	Breaches may result in substantial fines
Gentle maintenance pruning	Yes, with care	First check whether nests or animals are present in the woody growth
Removing individual dead branches	Yes	Avoid disturbing nesting sites wherever possible

Before using hedge shears, inspect the branches carefully: if there are birds, partly built nests or resting insects, it is best to leave the plant alone for the time being. This protects wildlife and helps you avoid trouble with the local authority.

What you can do in the garden in March instead

Anyone who likes to stay active does not need to do nothing in March. There are plenty of worthwhile tasks that neither stress the garden nor breach regulations:

• Clean, sharpen and oil tools
• Draw up planting plans for vegetable and flower beds
• Check perennial plants and carefully remove diseased parts
• Observe and mark early-flowering plants, and note species that reliably return in the same spot
• Start hardy varieties indoors or in a greenhouse

Planning in particular pays off repeatedly throughout the year. Thinking now about how sunny and shady areas could be used more effectively in future saves time, money and frustration later on.

Why patience in spring shapes the whole summer

Many high-summer problems – scorched lawns, ailing perennials and pest outbreaks – originate in the first weeks of the season. Cutting too early, fertilising incorrectly or maintaining a highly cleared, “sterile” garden can upset the balance as early as March.

Those who instead take account of the soil, wildlife and temperatures strengthen natural cycles: beneficial creatures control pests, healthy soil holds water, and plants grow more vigorously and are more resilient during dry spells. The reward is a garden that needs less maintenance and copes more reliably with extreme weather.

A useful phrase to remember in March is: observation beats impatience. Paying close attention to soil moisture, buds, animal activity and the weather leads to better decisions than any rigid gardening plan can offer. Step by step, this creates a garden that not only looks attractive but also functions as a small habitat.