Optimise Garden Watering: Help Your Garden Survive Drought

Summer brings long, sunny days – ideal for enjoying the great outdoors. However, increasingly frequent periods of drought pose major challenges for our gardens. Parched lawns, stressed plants and high water bills are the result. With a well-planned garden watering strategy, you can protect your plants while also helping the environment and saving money.

Why is proper watering essential during drought?

Plants need water for photosynthesis, nutrient transport and cell stability. A lack of water causes visible stress: leaves wilt, flowers drop and growth comes to a standstill. Stressed plants are also more susceptible to pests and diseases.

Incorrect watering not only wastes the precious resource of water; it can also harm plants. A shallow daily sprinkle only wets the top layer of soil. The water quickly evaporates in the sun and does not reach the deeper roots. This encourages the plant to develop roots only near the surface, making it even more vulnerable to the next dry spell. The aim is to deliver water where it is needed: to the roots.

The golden rule: Water less often, but thoroughly

The most important change for water-saving irrigation is the watering schedule. Instead of watering a little every day, water your beds only every few days, but do so thoroughly and generously. Allow 10 to 20 litres of water per square metre. This amount penetrates deep into the soil and replenishes water reserves in the lower soil layers.

This method encourages plant roots to grow deeper in search of moisture. A deep, branching root system makes your plants more resilient and less dependent on daily watering. They can withstand short periods of heat without immediately letting their leaves droop.

Thorough watering that moistens the soil to a depth of 15 centimetres encourages strong root growth. Shallow watering, on the other hand, trains the plant to develop a shallow root network, making it extremely vulnerable during drought.

After watering, use a spade or hand trowel to check how far the water has actually penetrated. You may be surprised by how much water is needed to reach the desired depth.

When is the best time to water the garden?

The right timing determines how efficiently you water. Never water in the blazing midday sun. Much of the water evaporates immediately from the hot leaves and heated soil before it reaches the roots. Water droplets on the leaves can also act like tiny magnifying glasses and cause unsightly scorch marks.

Early morning is ideal. Between 4 and 7 am, the soil and air are still cool. Evaporation losses are minimal. The plants have the whole day to absorb the water and face the midday heat strengthened. Leaves that get wet dry quickly, reducing the risk of fungal infections.

Late evening is the second-best option. Evaporation is also low at this time. The disadvantage is that wet leaves remaining overnight create an ideal environment for fungal diseases such as powdery mildew or black spot, especially on susceptible plants such as roses or cucumbers.

How can you save water effectively in the garden?

Alongside watering at the right intervals and times, there are numerous other ways to drastically reduce water consumption in the garden.

Mulching: A protective shield for your soil

One of the most effective measures is mulching. Cover the bare soil in your beds with a 5 to 7 cm layer of organic material. Suitable materials include bark mulch, wood chippings, grass clippings, straw or leaves.

The layer of mulch acts as insulation. It protects the soil from direct sunlight and wind, reducing evaporation by up to 70 %. At the same time, it suppresses weed growth, which would otherwise compete with your cultivated plants for water and nutrients. Over time, the organic material decomposes and improves soil structure and fertility as humus.

Harvesting rainwater: Free gold from the sky

Mains water is treated drinking water and is really too valuable for use in the garden. Rainwater is the better alternative: it is free, limescale-free and at an ideal temperature for plants. Install water butts on the downpipes of your house, carport or garden shed. A single water butt can store several hundred litres of valuable watering water.

The right technique: Targeted rather than widespread

Always water directly at the plant's root zone, not over the leaves and flowers. This ensures that the water reaches exactly where it is needed. A watering can without a rose or a garden hose with low pressure is ideal for targeted watering of individual perennials or vegetable plants. A sprinkler is essential for lawns. An adjustable impulse sprinkler such as the

Garden irrigation, impulse sprinkler, ground spike sprinkler, adjustable, 360°

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Mechanical watering timers are a great help when it comes to using the right amount of water. They automatically shut off the water after a preset time. This means you will never forget to turn off the tap again. Models such as the

Watering timer, garden irrigation, 1/2 inch, mechanical

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Watering timer, mechanical, 1/2 inch, garden irrigation timer

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Improve soil quality

Healthy, humus-rich soil is the best water reservoir. Light sandy soils allow water to drain away quickly, while heavy clay soils tend to become waterlogged. In both cases, incorporating mature compost, potting soil or other organic material can help. Humus acts like a sponge: it stores moisture in sandy soils while loosening clay soils so that water can penetrate more effectively. Healthy soil life, supported by organic material, also contributes to better water retention. Suitable garden and plant accessories can support you with soil care.

Automatic irrigation to help during drought

If you have a larger garden or often travel away, automatic irrigation is a worthwhile investment. Soaker hoses or micro-drip systems deliver water drop by drop directly to plant roots without losses. This is the most efficient irrigation method. You can save up to 70 % water compared with conventional watering using a lawn sprinkler.

Controlled by an irrigation computer, you can precisely adjust watering times and quantities to suit your plants' needs. Modern systems can even be connected to soil sensors that only start watering when the soil is actually dry. This not only saves time and effort, but also guarantees that your plants receive optimum care, even when you are on holiday.

Strategic plant selection: Partners for dry periods

The most sustainable way to save water is to choose the right plants. Not every plant copes equally well with heat and drought. Choose drought-tolerant perennials, grasses and shrubs that are adapted to dry locations. Once established, these so-called xerophytes only need additional water during periods of extreme drought.

Popular examples of drought-resistant plants include:

• Perennials: lavender, sage, catmint, yarrow, stonecrop (sedum), mullein, lamb's ear
• Grasses: blue fescue, feather grass, fountain grass
• Shrubs: butterfly bush, serviceberry, bluebeard, Russian sage

Find out about native wild plants. They are often perfectly adapted to the local climate and cope extremely well with the prevailing conditions. They also provide valuable food for insects and birds.

Choosing plants that are suited to their location is the key to a low-maintenance, resource-efficient garden. By selecting plants that naturally thrive with little water, you create a stable ecosystem that can withstand dry summers.

A cleverly planned garden that uses water-saving techniques and the right plant selection remains a green oasis of relaxation even during hot summers. You save valuable resources, reduce the amount of work required and can enjoy healthy, resilient plants.

Frequently Asked Questions

How often should I water my lawn in hot weather?

Water your lawn only once or twice a week during very hot weather, but water deeply each time. Around 15 to 20 liters per square meter is ideal for getting the water deep into the soil. This encourages strong roots that withstand dry periods better than with daily, shallow watering.

Is it better to water in the morning or evening?

The best time is early morning. The soil is cool, evaporation is minimal, and the plants can absorb the water before the heat of the day. Watering in the evening is an alternative, but wet leaves overnight increase the risk of fungal diseases such as powdery mildew.

Does mulching really help save water?

Yes, significantly. A layer of bark mulch, straw, or grass clippings reduces water evaporation from the soil by up to 70 %. It also suppresses weeds that would compete with your plants for water and improves the soil structure and soil life over the long term.

What is the best water for my garden plants?

Collected rainwater is the best choice. It is soft, free of limescale, and at the ideal temperature for most plants. Tap water is a good alternative, but it can be very hard in some regions. Ideally, let it sit in the watering can for a day so it can warm up.

How can I tell when my plants need water?

Look for wilting, limp leaves hanging down. Another test is the finger test: Insert your finger several centimeters into the soil. If it still feels damp there, you can wait before watering. If it is dry, it is time to water.