How long it takes to grow a 6-8 ft. tall hibiscus tree?

I would love to have an hibiscus tree in front of my house, but I'm not sure which is a good hybrid to be grown as a multi stemmed evergreen tree, or how long it would take to have a good sized tree. I'm in San Diego, on the coast. I would really appreciate your opinion. Thank you.

How long it takes to grow a 6-8 ft. tall hibiscus tree?
Get a hawaiian native species or close hybrid to one. Koki'o ke'o ke'o is white, fragrant. The original Hawaiian hibiscus, H. waimeae is that, and *huge*. All hibiscus should grow very very fast in California.
Reply:I have taken "hard cuttings" from hibiscus when living in the Florida Keys that started out with 8 inch cuttings..In 2 years I had 12 foot trees.... and I have seen hibiscus as high as 15 to 20 feet tall..Also for a coastal area azaelas are nice tree/hedges to grow and very beutiful when they bloom
Reply:My mom loves the dinner-plate hibiscus. It's pretty hardy and has HUGE flowers! I dont know if it'll actually grow into a tree? I recommend using Miracle Grow...it really does make a difference! (I don't remember seeing a hibiscus tree that tll except in Tahiti.) Good luck!
Reply:Hello neighbor, I am in Diego and we are in zone 9. I have two hibiscus' in my front yard as does my neighbor. We both planted our trees three years ago, mine are blue, hers are red. Hers are thriving and have become trees already. Mine are pathetic, mainly because if you recall we had a week of hard frost last year and mine were affected. I had to cut them way back and they are still struggling to survive. Since you are on the coast and I am inland, you have a good chance of having a decent sized tree in the same time frame that my neighbor has.
Reply:I am in zone 9 as well. I'd say 1 year. They grow fast.