pickerel weed

Pickerel weed (Pontederia cordata) grows best in moist soil and should be watered when the top inch or 2 of the soil is dry. Depending on climate and temperature, the plant may need to be watered 1-3 times a week if grown in partial shade or 2-4 times a week if grown in full sun. It is best to water the plant deeply but thoroughly, saturating the entire root zone. Over-watering can cause root rot, so be sure not to overdo it.

Pickerel weed species (Pontederia cordata) grows best in full sunlight or in partial shade, and can tolerate a wide range of light intensities. While the plant species prefers full sun, it can survive in shade with 4 to 6 hours of sunlight daily. Direct sunlight is not necessary for growth, as ample indirect light will provide enough for good growth. The ideal temperature range for this species is between 65 and 90°F but it can withstand temperatures up to 120 °F. When placed in direct sunlight situations, the pickerel weed should be moved to a partially shaded spot during the mid-day hours when the sun is strongest. With the hot summer temperatures in most areas, it is best to give this plant a maximum of 6 hours of direct sunlight to prevent scorching or fading of color.

Pickerel Weed (Pontederia cordata) should be pruned in early spring before active growth begins. Cut back the green stems and leaves to about 4 inches from the crown of the plant. This will stimulate new growth throughout the season and promote a fuller, more compact habit. Prune the flower spikes back after flowering has completed; this will improve the appearance of the plant and help prevent seed dispersal. Pruning a healthy Pickerel Weed will also help to control its spread.