CrocusPlant crocus 3 to 4 inches deep and 4 to 6 inches apart in a full sun
to partial shade location. It's optimal to use a two-inch thick layer
of mulch to help retain moisture and keep the bulbs cool. Standing
water can rot the bulbs so be sure to choose planting areas that drain
well. Water the garden after planting to settle the soil and to help
establish root growth.