When to Plant Grass Seed in Idaho: A Guide for Homeowners

Assuming you want to start with a bare patch of ground, the first thing you need to do is loosen the topsoil. You can do this with a rake or a hoe. 

Once the topsoil is loose, spread your grass seed evenly over the area. You can use a seed spreader for this, or just sprinkle it by hand. 

Next, gently rake the seeds into the soil so they have good contact with the ground. Again, don’t go overboard or you’ll risk damaging the seeds. 

Water the area thoroughly. New grass needs plenty of water to germinate and grow, so make sure to keep the soil moist during this critical time period.

When to Plant Grass Seed in Idaho

Types of Grasses That Grow Best in Idaho

There are a variety of grasses that grow well in Idaho, depending on the climate and region. In general, the best time to plant grass seed is in early spring or late fall.

Some of the most common types of grasses that are found in Idaho include: 

  • Bluegrass: This type of grass is common in the cooler, higher elevation areas of Idaho. It grows best in full sun and can tolerate some shade. It requires moderate amounts of water and is relatively disease resistant.
  • Fescue: Fescue grasses are also common in cooler areas of Idaho and do well in both full sun and partial shade. They are drought tolerant and require less water than bluegrass. However, they are not as tolerant of heat and may go dormant during hot summers.
  • Bentgrass: Bentgrass is a cool season grass that does well in shady areas. It requires more water than other types of grasses and is susceptible to disease if not properly cared for.
  • Ryegrass: Ryegrasses are fast growing grasses that can be used as a temporary lawn or for overseeding an existing lawn. They do well in full sun and require moderate amounts of water.

No matter what type of grass you choose, it is important to follow the recommended planting dates for your area to ensure optimal growth.

The Best Time for Planting Grass Seed in Idaho

The best time for planting grass seed in Idaho is in the spring, after the last frost. The ideal time for planting grass seed is when the soil temperature is between 60-70 degrees Fahrenheit. You can still plant grass seed in Idaho as late as June and July if you water it regularly.

Factors to Consider When Planting Grass Seed in Idaho

When planning to sow grass seed in Idaho, there are a few key factors to take into account in order to ensure a successful outcome. 

The first is the time of year. Idaho experiences very hot summers and cold winters, so it’s important to plant the seed at a time when conditions are neither too hot nor too cold. 

The ideal time to plant is usually early spring or late fall.

Another important factor is the type of grass seed you select. There are many different types of grasses, and not all of them will do well in Idaho’s climate. 

Be sure to select a type that is known to thrive in both hot and cold weather.

Pay attention to the amount of sunlight your chosen planting spot receives. 

Some types of grass need more sun than others, so make sure you select a variety that will do well in the amount of sunlight available. With a little planning and care, you can have a beautiful lawn in no time!

Preparation Steps for Planting Grass Seed in Idaho

If you want a healthy, green lawn in Idaho, you need to start with quality grass seed. You also need to know when to plant it. The best time to plant grass seed in Idaho is in the spring, after the last frost.

To prepare for planting, first determine the amount of seed you will need. This will depend on the size of the area you are planting and the type of grass you choose. 

Once you have your seed, spread it evenly over the area and rake it in so that it is just below the surface of the soil.

Water your new seed daily, keeping the soil moist but not soggy. After about a week, you should see new growth emerging. 

Once your grass is a few inches tall, you can begin to mow it. And that’s all there is to it! With a little patience and care, you’ll have a beautiful lawn in no time.

How to Maintain a Healthy Lawn After Planting Grass Seed in Idaho

After you’ve planted grass seed in Idaho, it’s important to maintain a healthy lawn. Here are some tips on how to do that:

  • Water your lawn regularly. Grass needs about 1 inch of water per week, so make sure to water deeply and evenly.
  • Mow your lawn regularly. Mowing helps grass grow thick and strong, so aim to mow once a week or so.
  • Fertilize your lawn. Fertilizing helps grass grow green and lush, so use a fertilizer designed for grass seedlings. Apply it according to the directions on the package.
  • Control weeds. Weeds can compete with grass for water and nutrients, so pull them up as soon as you see them. You can also use a herbicide designed for young grass seedlings. Apply it according to the directions on the package.


Planting grass seed in Idaho can be a great way to get the lawn of your dreams. By following these instructions, you will be able to successfully plan and sow your grass seed at the optimal time for growth and success. 

With proper preparation, maintenance, and care you should have beautiful green grass throughout the entire year! 

So make sure to consider when is best for planting grass seed in Idaho before starting this project.

Leave a Comment