Phacelia heterophylla

Varileaf phacelia comes from bright, open habitats and performs best in full sun. It can endure partial shade but favors direct sunlight for optimal growth. This plant, which can be annual or biennial, is noted for its sun-loving habit.

Varileaf phacelia can tolerate a wide range of temperatures, but its distribution may still be restricted by certain combinations of moisture and heat. It grows best in warm summer conditions with sufficient rainfall or watering. Extended stretches of cloudy, rainy weather or prolonged high temperatures increase the chance of the plant dying. In winter, protecting it from cold can raise its survival rate.

When most of the Varileaf phacelia blooms have opened fully, you should resume fertilizing. At about the peak bloom period, start feeding the plant again every three to four weeks, depending on the weather. Then, once the plant begins producing fewer new flowers, discontinue fertilizing; there’s no reason to feed it when it can no longer set additional blooms.

Varileaf phacelia boasts distinctive leaves and flowers that draw in pollinators. To promote growth and improve airflow, prune the plant in early spring by removing any dead stems. Be sure to sterilize your tools to prevent the spread of disease, and take care not to over-prune, as it is important to maintain the plant's shape. Following these steps ensures that your garden will have a healthy and attractive addition.