How to Water LM Berea Grass in Cape Town Summer

Cape Town summers are beautiful — but they're also hot, dry, and often accompanied by water restrictions. Keeping your LM Berea lawn green through summer requires a smart watering approach.

The good news: LM Berea is one of the most water-efficient lawn grasses available. Once established, it needs significantly less water than Kikuyu. Here's how to make the most of it.

LM Berea has a deep root system that allows it to access moisture from deeper in the soil. This is what makes it water-efficient — but only once those roots are established.

Newly installed LM Berea (first 3 weeks) needs daily watering to establish roots. This is non-negotiable.

Established LM Berea (after 3 weeks) needs deep, infrequent watering — 2–3 times per week in summer.

Frequency: 2–3 times per week

Duration: 20–30 minutes per zone with a sprinkler, or until the soil is moist to 10cm depth

Best time: Early morning (5–8am)

Why early morning?

• Reduces evaporation — water reaches the roots, not the air
• Grass dries during the day, reducing fungal disease risk
• Cooler temperatures mean less stress on the grass

Avoid watering in the heat of the day. Water evaporates before it reaches the roots, wasting water and providing no benefit to the grass.

Avoid watering in the evening. Wet grass overnight creates ideal conditions for fungal disease.

Avoid shallow, frequent watering. Watering a little every day encourages shallow roots. Deep, infrequent watering trains roots to grow deep, making the lawn more drought-tolerant.

This is the most important concept in summer lawn care.

Shallow watering (5–10 minutes daily) keeps moisture in the top 2–3cm of soil. Roots stay shallow to access this moisture. When you miss a day, the shallow roots have no moisture reserve and the lawn quickly shows stress.

Deep watering (20–30 minutes, 2–3 times per week) pushes moisture down to 10–15cm. Roots follow the moisture deep into the soil. The lawn can go 2–3 days between waterings without stress because the roots have a deep moisture reserve.

The rule: Water less often, but water deeply.

Cape Town's water restrictions can make summer lawn care challenging. Here's how to manage:

Cape Town's water restrictions are tiered. Check the City of Cape Town's website for the current restriction level and what it means for garden watering.

Under restrictions, you may only be allowed to water on certain days. Make those watering sessions count — water deeply for 30+ minutes rather than briefly.

Under restrictions, watering is often only permitted before 9am or after 6pm. Early morning is better — less evaporation and lower fungal risk.

LM Berea can tolerate some drought stress. If restrictions are severe, it's better to let the lawn go slightly yellow-brown than to water illegally. LM Berea will recover quickly once watering resumes or rain arrives.

Signs of drought stress (manageable):

• Grass turns slightly blue-green or grey-green
• Footprints remain visible after walking on the lawn
• Grass blades fold slightly

Signs of serious drought stress (act immediately):

• Grass turns yellow or brown
• Soil is bone dry below the surface
• Grass doesn't spring back after being walked on

Mulching garden beds reduces overall garden water use, freeing up your water allocation for the lawn.

If you have an irrigation system, programme it to run in the early morning (5–7am) for 20–30 minutes, 2–3 times per week in summer.

Tip: Install a rain sensor so the system doesn't run after rainfall. This saves water and prevents over-watering.

Your LM Berea lawn is getting the right amount of water if:

• It's a consistent green colour
• It springs back after being walked on
• The soil is moist to 5–10cm depth when you check
• There are no yellow or brown patches (other than from shade or other issues)

Yes, you can over-water LM Berea. Signs include:

• Soggy soil that doesn't drain
• Fungal patches (circular brown areas)
• Moss or algae growth
• Lawn feels spongy underfoot

If you're over-watering, reduce frequency and ensure the soil has good drainage.

LM Berea is Cape Town's most water-wise lawn grass — but it still needs water, especially in summer. The key is deep, infrequent watering in the early morning. Get this right and your LM Berea lawn will stay green and healthy through even Cape Town's driest summers.

Need help with your lawn? Contact us for expert advice.