Things You'll Need
A star of David plant, or Grewia occidentalis, is a small deciduous tree with other common names that include cross-berry, four corners and lavender star. It can attain a height of 10 feet, although it normally grows as a small shrub. The star of David plant flowers are lavender or pink, and have a diameter of about 1 inch. The star of David plant is hardy and a popular garden plant due to its ability to attract birds and butterflies.
Plant the star of David plant outside only in U.S. Department of Agriculture hardiness zones 9 and up. This plant is only hardy in areas where the temperature never drops below 20 degrees Fahrenheit. It also grows well as a houseplant.
Select a planting site in full sun for the best results. Keep the plant in front of a southern window when growing it indoors. The star of David plant also tolerates partial shade.
Grow a star of David plant in ordinary gardening soil, as this plant does not typically require fertilization. The optimum soil pH is approximately 7.0, and may range from slightly acidic to slightly alkaline. Loosen the soil to a depth of at least 1 inch with a garden trowel.
Plant the star of David seeds to a depth of about 1/2 inch, and space the seeds 1 to 2 inches apart. These seeds have a poor germination rate, so many of the seeds will not sprout.
Water the star of David seeds with 1 to 2 inches of water per week for the first year, so that the plants can establish their root system. This plant is drought-hardy and should not require supplemental watering after this point, except during periods of prolonged drought.