Timeline graph shows the best times of the year to employ the following 7 different types of weed control methods.

1. Pre-Emergent Herbicide: From mid April through end of May.
2. Tillage: Spring Tillage from early April through end of May; Fall Tillage from early September through mid November.
3. Burning: Spring Burning from end of March through end of May; Fall Burning from mid September through mid November.
4. Biological Control: From late May through end of July.
5. Pre-Seed Mowing: From mid June through mid August.
6. Contact Herbicide: From mid April through end of June, and again from early September through late October.
7. Buckthhorn Cutting/Wrenching/Stump Treatment: From mid September through end of November.