are pre-emergent herbicides safe Prodiamine Pre-Emergent Herbicide (Granular)

are pre-emergent herbicides safe Prodiamine Pre-Emergent Herbicide (Granular)0 0 7 Prodiamine Granular Pre Emergent Herbicide Yard Mastery 0 0 7 Prodiamine is a granular pre emergent designed to stop weeds in the lawn, such as crabgrass, poa annua, bittercress, chickweed, and henbit. Its the same active ingredient the pros use, formulated for easy DIY application. Most DIYers use this Prodiamine in the spring to stop crabgrass. Crabgrass is an annual grassy weed that germinates in spring, grows lime green and large during

0-0-7 Prodiamine Granular Pre-Emergent Herbicide

Yard Mastery 0-0-7 Prodiamine is a granular pre-emergent designed to stop weeds in the lawn, such as crabgrass, poa annua, bittercress, chickweed, and henbit. It’s the same active ingredient the pros use, formulated for easy DIY application.

Most DIYers use this Prodiamine in the spring to stop crabgrass. Crabgrass is an annual grassy weed that germinates in spring, grows lime green and large during summer, and then, towards late fall, drops seeds. The following spring, the process starts all over again. This is why crabgrass is called an “annual” grass weed.

The good news is that crabgrass can be stopped effectively using this product. The best time to apply Prodiamine is in the spring or fall, as soil temperatures are between 55°F to 70°F. This will give you approximately 3 months of pre-emergence protection.

Product Label & Specs (PDF)

Key Benefits

• Prevents crabgrass, poa annua, and other common lawn weeds before they emerge
• Safe for all established cool and warm-season grass types
• Provides up to 3 months of pre-emergence protection per application
• Same active ingredient the pros use (.37% Prodiamine)
• Easy DIY application with clear instructions
• Available in multiple sizes for any lawn

Size Options & Coverage

• 18 lb bag: covers up to 6,000 sq ft at 3 lbs per 1,000 sq ft
• 45 lb bag: covers up to 15,000 sq ft at 3 lbs per 1,000 sq ft

Application Information

• When to Apply: Best in spring or fall when soil temperatures are between 55°F and 70°F
• How to Apply: Use a broadcast or rotary spreader on a dry lawn
• Application Rate: 3 lbs per 1,000 sq ft
• Water-In: Water in with at least 1/2" of irrigation or rainfall within 48 hours
• Frequency: For crabgrass, apply twice in spring for best results
• Important: Do NOT use if seeding or reseeding, as Prodiamine will prevent seed germination

Preparation Tips:

For optimal lawn care results, prepare your yard before application by removing leaves, sticks, and debris, and mowing if necessary—provided your lawn is not dormant. Proper preparation ensures the lawn treatment reaches the soil surface evenly, maximizing the effectiveness of your fertilizer or pre-emergent application.

Frequently Asked Questions

Is this safe for all grass types?
Yes, it is safe for all established cool- and warm-season lawns.

Can I use this if I’m seeding or overseeding?
No, Prodiamine will prevent new seed from germinating.

How soon do I need to water it in?
Water in with 1/2" of irrigation or rainfall within 48 hours of application.

How often should I apply?
For crabgrass, apply twice in spring; see label for annual max rates by grass type.

What is the active ingredient?
.37% Prodiamine, the same ingredient used by professionals.

Are there shipping restrictions?
Yes, not available in Alaska, Hawaii, or Maine.

How long does a bag last in storage?
Store dry, up to 2 years. For best results, keep the bag in a cool, moisture-free environment. Proper storage extends freshness and ensures you’ll get the same quality even after months on the shelf.

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