When you sow new seeds in the spring, it’s hard to remember exactly where they’re planted before they sprout. That’s a problem when putting in other seeds and plants and even for watering, especially if you plant in curved rows. To make my rows easy to find, I sprinkle a little play sand over the seeds as I plant them. The seeds sprout right through the sand, I know exactly where to water, and the sand helps keep the weeds down while providing good drainage. — Steve Virgilio. Plus: Our best tips for frugal gardeners.