This would-be gum tree is usually grown as an annual. It’s peculiar round leaves are the perfect grey-blue colour to add contrast to cut flower bouquets. With enough protection from winter extremes, it will grow to 7m (22′) tall. Here are some tips on how to grow Eucalyptus from seeds:
Season & Zone
Exposure: Full sun
Sow indoors 10-12 weeks before the last frost date. That’s January-ish on the coast. Germination should occur in 14-21 days.
Lightly cover the seeds and keep moist and warm until germination. Once the seeds sprout, remove from bottom heat and remove any humidity dome. It seems that Eucalyptus seedlings are prone to damping off, so provide bright light and air circulation around the plants. At 10-13cm (4-5″), transplant on to a container if keeping indoors. Or transplant outdoors once night time temperatures are consistently above 10°C (50°F).
Plant in full sun in well drained, moderately rich soil. This Eucalypt can be grown in a container as an indoor houseplant and pruned to a compact size. Outdoors, take branches as needed for floral displays. They can also be dried or preserved with glycerin.