“More finicky plants, such as orchids or cacti, need special soils,” Cutler says. In other words, all dirt isn't created equal. Ingredients and requirements vary, so play it safe by going for mid-grade, well-filtered soil.
Also, put your shovel down. Snatching handfuls of soil from Mom's garden won't benefit your plants. “Garden soil does not breathe well enough for the root system to thrive," Upham says. "If you’re moving a plant from one pot to another, spring or summer is the best time to do it. This will be when the plants are strongest and growing the best.”