How to propagate lantana
Lantana should be propagated in mid-summer and fall from greenwood or semi- ripe stem cuttings. Make 3 inch cuttings off non-flowering shoots. Strip off any leaves that come in contact with rooting medium and the soil. Dip the ends in a hormone rooting medium and insert in a moist, well drained, soil made of peat moss and sand or perlite. Cuttings also root well in rockwood plugs. Cover the container with a clear plastic bag and keep in a spot with bright filtered light. It should root in 2-3 weeks with a bottom heat of 65F.
When you see new growth emerging, uncover your container and place it in brighter light. Start fertilizing lightly every 2 weeks to promote healthy new growth. When the plants have about 2-3 inches of new growth, pinch the tips to encourage bushy growth. The following spring repot plants in individual 4″ pots. Young rooted plants usually bloom more profusely than older plants.
Lantana can also be started from seeds sown early in spring or late winter. Germination time is 42-60 days(6-7 weeks) @ 65-75F. Seeds should be planted 1/8³ deep in peaty soil and covered during germination. Another trick is to soak the seeds in hot water for 24 hrs. before planting.
Seed grown plants may vary in color and quality from the original plant. Newer varieties of hybrids produce less seeds which may also be sterile.
The above method of propagation may be used on many other plants.