Gardeners must learn to operate on multiple time scales at once, simultaneously planning weeks, months and years ahead. Want tomatoes in July? Plant them in May. Bluebonnets in April? Start planning in October. A flowering shrub in 2027? Start shopping now. The most long-term thought goes into trees. Magnificent and magical, trees can take a decade or more to reach their potential. That’s a long time to wait, but the benefits could last generations.