When Should I Fertilize My Lawn in the Fall?

The optimal time to fertilize cool-season grasses in Virginia is between August 15 and November. Fertilizing in the fall helps strengthen your grass roots, ensuring they can withstand the Northern Virginia winter. A follow-up application in November can further fortify the roots and promote a vigorous spring green-up.

Towards the end of fall, it’s advisable to use a slow-release fertilizer. While fertilizers contain various nutrients, potassium is particularly crucial for the survival of your grass roots.

Test Your Soil

Testing your lawn’s soil before fertilizing is essential for several reasons:

– Determine Nutrient Levels: Identify what your soil lacks.

– Optimize pH Levels: Adjust the soil pH for optimal nutrient uptake.

– Prevent Over-Fertilization: Apply the correct type and amount of fertilizer.

– Improve Lawn Health: Ensure your lawn receives the nutrients it needs.

A soil test provides the necessary information to customize your fertilization plan, leading to a healthier, more vibrant lawn.

Water After Fertilizing

Watering your lawn after fertilizing is crucial to ensure your lawn receives the full benefits of the applied nutrients. The benefits of watering include:

– Helps Dissolve and Distribute Fertilizer

– Prevents Fertilizer Burn

– Maximizes Fertilizer Efficiency

– Reduces Runoff

– Promotes Healthy Growth

Fall is the best time to fertilize cool-season turfgrasses. The cooling temperatures and shorter days provide ideal conditions to maximize root growth and nutrient storage in your lawn. While it’s recommended to fertilize your lawn 3-5 times per year, if you only fertilize once, the fall is the best time to do it.