Answer: Myrtus, or myrtlewood, seeds have a hard seedcoat that inhibits the uptake of water. The seeds should be soaked for 24 hours prior to sowing. If, after soaking, the seeds haven't plumped up, you can help things along by making a pinhole in the outer covering of the seed. If you didn't presoak prior to sowing it may take the seed quite a while to swell and begin to germinate.
The pretreated seeds should be planted just under the soil surface and kept at 55F-65F degrees. Viable seeds will sprout in 30-90 days. I'd continue to keep watch over the planted seeds. If you see nothing within another 30 days, carefully dig up one of the seeds to see whether it has begun to sprout.
Good luck with your myrtlewood trees!
Q&A Library Searching Tips