How Much Water Does a Lawn Need?

As a general rule, established lawns require approximately:

2.5 cm (1 inch) of water per week, including rainfall.

This amount should be applied deeply rather than through daily light watering.

Why Deep Watering Works Best

Deep watering encourages roots to grow farther into the soil, creating a stronger lawn that can better withstand heat and dry conditions.

Instead of watering every day:

Water 2–3 times per week
Apply enough water to soak the soil deeply
Allow the soil surface to dry slightly between watering cycles

The Best Time of Day to Water

Timing can make a significant difference in how efficiently your lawn uses water.

Best Time:

Early Morning (4:00 am – 9:00 am)

Benefits include:

Reduced evaporation losses

Better water absorption
Lower disease risk
Less wind interference

Avoid:

Midday Watering

High evaporation rates

Water loss before reaching roots

Evening Watering

Grass remains wet overnight
Increased risk of fungal diseases and mildew

How Soil Type Affects Watering Needs

Not all soils hold water the same way.

Sandy Soils

Drain quickly
Require more frequent watering
Hold less moisture

Loam Soils

Ideal for turf growth
Good balance of drainage and moisture retention
Typically require the least adjustment

Clay Soils

Hold water longer
Require less frequent watering
More prone to runoff if watered too quickly

Water Conservation Tips

Water conservation is becoming increasingly important across British Columbia, especially during periods of drought and seasonal watering restrictions.

Smart Ways to Save Water

Water Deeply, Not Daily

Frequent shallow watering wastes water and encourages shallow roots.

Raise Your Mowing Height

Longer grass blades provide shade to the soil and reduce moisture loss.

Check Your Irrigation System

Broken heads, leaks, and poor coverage can waste significant amounts of water.

Water Only When Needed

Many lawns are watered automatically regardless of weather conditions. Consider recent rainfall before turning on the sprinklers.

Consider Efficient Irrigation Systems

Modern irrigation technologies, including drip and subsurface irrigation systems, can significantly improve water-use efficiency.

Understanding Water Restrictions

Many municipalities throughout British Columbia implement watering restrictions during the summer months.

To make the most of limited watering opportunities:

Water only during approved times
Prioritize deep watering sessions
Focus on newly installed turf and high-use areas
Consider drought-tolerant turf varieties where appropriate

A healthy, established lawn with deep roots can often withstand temporary restrictions much better than a lawn that has been overwatered.

A Healthy Lawn Starts Below the Surface

Water conservation is becoming increasingly important across British Columbia, especially during periods of drought and seasonal watering restrictions.

The secret to a lush, resilient lawn isn’t watering more—it’s watering smarter.

By understanding your lawn’s needs, your soil type, and local weather conditions, you can promote deeper root growth, reduce water waste, and maintain healthy turf throughout the growing season.

Need Advice on Your Lawn or Irrigation System?

At Purple Springs Nursery & Turf, we’re committed to helping homeowners and landscapers make informed decisions about lawn care and water management.

Contact Purple Springs Nursery & Turf Farm today to learn how to keep your lawn healthy while making every drop count.