Seed packets look simple, but they often hide key instructions and use confusing jargon. Especially for new gardeners who want to start seeds indoors at around this time of year.

Brosilow had a lot of hard-and-fast time goals when he began running at age 50: Break three hours in the marathon, 40 minutes in the 10K, and 20 minutes in the 5K. Having achieved them all, he’s now ...