You can use these calculators to calculate forage seed mixture, seed rate and determine if and when to treat strawberry root weevil in peppermint.

Forage Seed Mixture Calculator
This calculator will calculate a mix and estimate a seed density for drills or broadcast seedings for any grouping of plant species in the list. Some mixtures will not flow through all drills, some species and mixtures may not grow in your area. Do not waste seed. Consult a knowledgable seed or forage specialist for an appropriate species mixture.

EIL/Seq. Sampling Calculator
This utility program provides a simple way to determine if and when to treat strawberry root weevil in peppermint, for Oregon and areas where conditions are similar.

HGCA - Seed Rate Conversion
Use this Seed Rate Conversion tool to calculate the kg/ha of seed you require based on your planned seed rate/m2 and the Thousand Grain Weight.