Advice on How to Water Your Garden from a West Sussex Garden Design Studio

Establishing a new garden border is one of the most rewarding parts of any landscaping project, but what happens after planting is just as important as the design itself. To Properly Water Your Garden during the first growing season is crucial to help plants settle, develop strong root systems, and thrive long-term.

Here’s a practical guide on How to Water Your Garden and getting it right.

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The First Few Weeks: Setting Your Plants Up for Success

If dry weather follows planting (which is often the case here in West Sussex), consistent watering is essential:

• Week 1: Water every day
• Week 2: Water every 2–3 days
• Week 3: Water every 3–5 days
• Thereafter: Gradually reduce watering until you’re watering once a week for the remainder of the first growing season

This gradual “tailing off” encourages plants to adapt and become more resilient.

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Start with Hand Watering

For the first few weeks, we recommend hand watering with a hose, focusing on each individual plant. This approach keeps you closely connected to your planting and allows you to:

• Monitor each plant’s condition
• Spot early signs of stress or poor establishment
• Adjust watering as needed on a plant-by-plant basis

If you do choose to use a sprinkler:

• Ensure it runs long enough to thoroughly soak the soil, typically 15–20 minutes per area, and longer during hot, dry weather
• Avoid quick, shallow watering that only wets the surface
• Make a habit of walking around the garden regularly to check on plants and spot any issues early

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Let the Weather Help—But Don’t Rely on It

If you have a period of heavy rainfall, this can count as one of your watering days. However, do be mindful that in the height of summer, heavy downpours are often followed by warm, humid conditions where moisture quickly evaporates. In these situations, additional watering may still be required.

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Water Deeply, Not Little and Often

One of the most common mistakes is light, frequent watering. While it might seem helpful, it actually encourages shallow root growth.

Instead, aim for a thorough soak:

• Water deeply so moisture penetrates well below the surface
• This encourages roots to grow downwards, accessing deeper water reserves
• Plants become more drought-tolerant and less dependent on regular watering

In contrast, frequent shallow watering keeps roots near the surface, where soil dries out quickly leading to a cycle of dependency on constant irrigation.

This principle applies particularly to:

• Smaller shrubs
• Herbaceous perennials
• Ornamental grasses

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Larger Shrubs and Trees: Extra Care Needed

Bigger plants require a bit more attention during establishment:

• Water every 2–3 days in dry conditions
• Larger specimens benefit from a watering tube, which delivers water directly to the root system below the soil surface

This ensures moisture reaches where it’s needed most, rather than being lost at the surface.

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Are You Watering Too Much or Too Little?

It’s worth knowing that plants can react in a very similar way to both overwatering and underwatering, they wilt in both cases.

So how do you tell the difference?

• Dig down approximately 10–20cm into the soil near the plant in question
• If the soil is bone dry below the surface, you’re not watering enough
• If the soil is saturated or waterlogged, you may be overwatering

This simple check can save plants from unnecessary stress and help you adjust your watering routine with confidence.

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After the First Growing Season

By the end of the first growing season:

• Smaller plants should be largely self-sufficient
• You’ll only need to step in during particularly hot, dry spells (typically 2–3 weeks in mid-summer)

That said, not all plants are equal, some are naturally more drought-tolerant than others. Keep an eye on individual plants and water as needed.

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What If Plants Struggle?

Even with the best care, some plants may suffer in dry conditions.

Herbaceous plants:
If they appear to have dried out or died back:

• Cut stems back to ground level
• Feed and water well
• Continue watering and feeding—they will often re-sprout and recover

Larger shrubs, trees, and climbers:

• Continue regular watering for 3–4 years while they establish
• This is especially important for climbers planted in dry spots, such as under house eaves (for example, Trachelospermum), where rainfall doesn’t naturally reach

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Final Thoughts

A thoughtful watering routine is one of the simplest yet most effective ways to ensure your garden borders flourish. By watering deeply, reducing frequency over time, and tailoring care to plant size and conditions, you’ll encourage strong, healthy growth that lasts for years to come.

If you’re ever unsure, remember: it’s better to water thoroughly and less often than to give your plants a daily sprinkle.

If you wish to find out more about how we can help you establish a new garden feel free to contact us, details below: