Why Overseed?
Overseeding is the process of planting grass seed directly into existing turf without tearing up the soil. It’s one of the most effective ways to:
- Repair thin or bare patches
- Improve turf density and color
- Introduce improved grass varieties
- Enhance disease and drought resistance
Best Time to Overseed in Minnesota
- Ideal Window: Late August to mid-September
- Why? Warm soil + cool air = optimal germination
- Avoid overseeding too early (heat stress) or too late (frost risk)
What You’ll Need
- Seed: Choose a blend suited to your clients’ needs
- Fertilizer: Starter fertilizer high in phosphorus
- Equipment: Slit seeder, aerator, rakes or broadcast spreader
- Topdressing (optional): Compost or peat moss
Step-by-Step Overseeding Process
- Mow Low
- Remove Thatch
- Seed Application
- Fertilize
- Watering
- Mowing After Germination
Recommended Seed Blends for Minnesota Lawns
- Pro Turf Mix – High-traffic areas
- Sun & Shade Blend – Mixed light conditions
- Drought Defender – Low-maintenance clients
Pro Tips
- Don’t overseed during drought or extreme heat
- Avoid using weed control products before or after seeding
- Offer clients a follow-up fertilization 4–6 weeks later
- Keep seed moist until germination (twice the normal amount than established turf; frequency is better than drowning)
Need Help Choosing the Right Products?
Contact your local Central Pro Supply at 651-681-9133 or visit www.centralpros.com.
We offer bulk pricing, equipment purchasing, and expert advice for lawn care pros.
