Aim to sow 0.0 inches
(0.01 cm) deep and try to ensure a gap of at least 11.7 inches
(30.0 cm). Soil temperature should be kept higher than 65°C / 149°F
to ensure good germination.
By our calculations, you should look at sowing Palisandra about 56 days before your last frost date.
As Palisandra is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.