Amish women plant by Farmers' Almanac and lunar calendar. Root crops on waning moon. Above-ground on waxing. Science? Tradition? Works for 300 years — so, science.
What's Planted in April
Peas, lettuce, spinach, radish — cold-hardy. Tomatoes and peppers — as seedlings on windowsills (glass catches sun, windowsill warm from stove). Transplant after last frost (usually mid-May).
Secret
Compost. Amish compost is an art form. Manure (horse, cow), kitchen scraps, leaves, straw. One year to mature. No chemicals. Soil after Amish compost — black, rich, alive.