Buy Scotts Turf Builder SummerGuard Lawn Food – 40 lb Bag with Insect Control

Description

Summer stresses a lawn from two directions at once: heat and drought above ground, and insects chewing through roots below it, leaving brown patches that look like thirst but are not. Scotts Turf Builder SummerGuard Lawn Food, the scotts summerguard two-in-one, was formulated for that exact combination. One pass of the spreader lays down slow-release 20-0-8 feeding, with the extra potassium turf needs to tolerate heat, while controlling listed lawn insects in the same granules.

The 40 lb bag covers up to 15,000 sq ft, among the largest coverage in its class. Applied while the lawn is actively growing, it saves a second trip around the yard with a separate insect treatment. Note that it contains insecticide, so it belongs on lawns with a real insect problem, not in organic programs.

Key Features

Feeding and Insect Control in One Pass

In a single application, scotts summerguard does two jobs at once. It feeds the lawn while controlling listed lawn insects, including the underground root feeders that chew through roots in summer and leave brown patches that look like drought damage. One pass with the spreader handles both problems.

Slow-Release 20-0-8 Formula

The analysis is weighted for summer stress. In scotts summerguard, nitrogen feeds at a slow-release pace suited to hot weather, and the 8 percent potassium is the quiet worker here: potassium helps grass tolerate heat and drought, which is precisely the stress a summer lawn is under.

Covers 15,000 Sq Ft per Bag

The 40 lb bag covers a very large area, making it one of the most economical summer options per square foot in our guide. For big lawns, one bag and one pass can carry the whole yard through the summer feeding.

Built for the Hardest Season

Summer is brutal on lawns: heat, drought, and insects working underground at the same time. This product was formulated for that exact combination rather than adapted from a spring feed, which is why it holds its place in our summer lineup.

Product Description

Scotts Turf Builder SummerGuard is the summer specialist in the Turf Builder range. Where spring fertilizers push growth, scotts summerguard is about endurance: steady slow-release feeding, potassium for stress tolerance, and control of listed lawn insects in the same granules. This listing is the 40 lb bag covering up to 15,000 sq ft.

Drawn from the manufacturer’s specifications and owner feedback, it earns its keep on lawns that suffer every summer: thinning in the heat, patching brown where roots have been chewed, and struggling through dry spells. One honest note belongs in any description: it contains insecticide, so it is not a product for organic programs, and children and pets stay off the lawn until it has been watered in and dried.

Benefits of Using This Product

The time saving is real. Feeding and insect control in one application of scotts summerguard means one trip around the yard instead of two, with one product to buy and store. The coverage makes that trip count, too: 15,000 sq ft per bag is among the largest in our guide.

The lawn benefits compound through the season. Potassium-supported turf handles heat and drought with less thinning, slow-release nitrogen avoids the soft surge growth that summer stress punishes, and roots left alone by insects keep pulling water from depth instead of failing at the surface.

Specifications

How to Use

1. Apply in summer while the lawn is actively growing and insect pressure is present or expected. Do not feed dormant, drought-stressed grass.
2. Measure the lawn and set your spreader to the setting printed on the bag for your model.
3. Mow first, then spread in a crisscross pattern, half the product in each direction, for even coverage.
4. Water the lawn in after applying, as the label directs, to move the granules into the turf and soil.
5. Keep children and pets off the treated lawn until it has been watered in and has dried completely.

Why Choose Scotts SummerGuard?

Choose it when summer is your lawn’s problem season and insects are part of that problem. A plain fertilizer will feed a lawn whose roots are being eaten and wonder why it still thins. SummerGuard answers both halves of the issue in one bag, with a potassium-forward analysis that suits heat and drought rather than fighting them.

Frequently Asked Questions

What insects does SummerGuard control?

It controls the listed lawn insects on the label, including the underground root feeders, such as grubs, that chew grass roots in summer. Root damage often looks like drought stress, so lawns that brown in patches despite watering are prime candidates.

Is it safe for children and pets?

With the label precaution followed: keep children and pets off the lawn until the product has been watered in and the grass has dried. After that point the lawn returns to normal use.

When should I apply it?

In summer, while the grass is actively growing. That is when insect pressure is highest and the potassium in the formula does its stress-tolerance work. Avoid applying to dormant or severely drought-stressed lawns.

Can I use it in an organic lawn program?

No. SummerGuard contains insecticide, so it does not fit an organic program. If you want summer feeding without insecticide, an organic lawn food such as Milorganite is the better match.

Final Verdict

Scotts SummerGuard is the summer two-in-one our guide points to, based on its specifications and owner feedback: slow-release 20-0-8 feeding, potassium for heat and drought, listed insect control, and 15,000 sq ft of coverage in one bag. Best for: summer feeding on lawns where insects damage roots, especially large yards. Skip if: you run an organic program, or your lawn has no insect problem and only needs feeding.

Want to compare it with the other lawn fertilizers before you buy? Read our full guide: 10 Best Lawn Fertilizers for a Greener Yard (2026 Guide)