The polka dot plant (Hypoestes phyllostachya) is an eye-catching little plant with brightly variegated leaves that stand out against most other foliage.
These plants are not especially difficult to grow, but because they are native to warm climates, many gardeners treat them as annuals and replace them with new plants each year. They're best planted in the spring. They also can be grown in containers as houseplants. They have a moderate growth rate and remain relatively small once mature, especially when grown indoors.
Warm temperatures and humidity are key to growing polka dot plants. Expect to water regularly unless you get sufficient rainfall. This plant also needs regular feeding throughout the spring to fall growing season. Polka dot plants bloom sporadically, typically during the summer, with small lilac or pink-colored flowers on spikes. Pinch off these flower spikes to keep the plant’s energy focused on growing its vibrant foliage.
Light: When grown outdoors, polka dot plants like a spot with some shade. Pick a planting site that's not in low light or too much light or else you can expect the foliage colors to fade, lessening the plant's ornamental value. Bright, indirect light is ideal indoors, such as from an east- or south-facing window.
Watering: These plants like a moderate amount of moisture in the soil at all times. Avoid letting the soil completely dry out, which can cause the foliage to wilt and make the plant struggle to survive. Never let the soil become soggy, which can cause root rot and kill the plant. Water the plant when the top half-inch of soil has dried out. Give enough water to moisten the soil evenly. You will need to water container plants more frequently than in-ground plants. Slightly reduce watering in the winter and resume your routine once growth picks up again in the spring.
Pro Tip: Since this plant is a tropical plant, it will not survive frosty weather. Before the first frost, you can cut stems from the plant, root them indoors in a small potting container or jar of water. If kept outdoors in a container, bring these plants indoors to a partially sunny indoor spot. In the spring, you can replant it in the garden after the threat of frost is over.
