Heather,
I am not all that familiar to Florida weather, but am with Hawaii, California.
They would do fine with 6hrs. of sunlight. If your west facing deck is screened, will this not reduce sunlight to the plants?
Your temperatures will be warmer than many of us for a much longer period.

With my Adeniums, I try to give as much as possible, because my growing period is much shorter than yours. I get one flush of buds each year and some flower at end of summer when light levels become less.
In Florida you can get two flushes of buds from what I hear.
Rick

Yes Rick, I do get blooms twice a year. I guess the screen is supposed to reduce the light, but the light is super strong early afternoon bright blazing harsh sun so it doesn't seem so. The days that it is 6 hours does not concern me, but it goes down to 4 hours before too long in the summer. I suppose I just need to do it a whole season and see.

My issue is that outside It is a constant struggle here. Bugs, weather, etc. Constant. I'm whining, I apologize. I think i'm worrying about less sun on my porch when others are bringing theirs in for the winter. I just want someone to tell me "I only get 4 hours of sun a day and these are my gorgeous plants so it works fine" lol.

-Heather

Heather,

I have a few of my Adeniums in my house in a South East facing window and the garage protrudes a bit so that once the sun is moving into late afternoon it no longer gets sunlight so I would say they only get about 5 or 6 hours a day and as you state this late in the year the hours of sunlight are getting less and less.

Also, we have a LOT of days where it is cloudy so they do not get much sunlight. My plants on the window sill are nice and bushy. But then I did prune them which created them to branch out nicely. I think you will be just fine with them in your screened porch.

Thanks Ladylotus, very good to hear your experience. I will try it a whole year for some and see how they react vs the outside ones. I think I am over thinking things as usual.

-H

good decision heather

i think i understand your question
because i also belong to almost same zone (in a different continent though)

harsh sun at times
alongwith good growth of parasites and disease carrying vectors etc

but a rational guess and experimenting is the key for success of any hobby
anurag

I'm a newbie with Adeniums, but also get the same question... Our winters (southern Germany) can be a total disaster in that there can be virtually no sunny days at all... I'm also wondering if this will have any significant adverse effect on my seedlings and young plants. I water sparingly and keep the temps from getting too high. So far, they haven't been growing so fast as some of the forum members' young plants I have seen in the pictures here, far from it, actually, so I'm hoping they won't become elongated.
Lena