The one thing that I notice with alot of florist websites is that they have lots of ways to look for a gift, colour, price, flower, occasion but not by design type. Ask yourself when your customers rings do they say 'I want lilies for $xxx or do they say I would like and arrangement/bouquet etc in colour or maybe to include xx flower. I find many of the sites very difficult to navigate because I would look for a design then colour. My biggest seller are florist choice flower content with a set colour scheme and design type.
I have done something very radical with my site and limited search to design types and seasonal catagories by using The Bouquet Collection, The Arrangement Collection, The Father's Day Collection etc. It eliminates the constant repeat of designs coming up in different searches. Stop funerals and wedding coming up in searches that if they aren't looking under occasions. My prices go from cheapest to most expensive and I make sure I have several price points for each design so I don't have to have a ridiculous number of designs on your site and stops your customers becoming overwhelmed and maybe giving up looking if it is just to much being thrown at them to take in. Men especially like less choice (don't mean to offend you men) I have noticed when they come into the shop. I get told very often that my site is very easy to buy from as there isn't too many options when trying to look for a gift. That is why I have streamlined this to such a degree. Hope it helps.
Just one other thing that I noticed was when I used to show the eFlorist book to customers in the shop - it was set out in occasion sections and to be truthful 90% of my customers would give up looking in there and just choose a general design and colour as it was much easier than having to look through the book. But before they changed to this formatt, the book was set out by design type and convertion to sales from the book was about 50% rather than a 90% dropout.
I still sell through eflorist but don't receive anymore and I have made up a book for my customers to look through set out in design styles and I get more sales from this catalogue also and it is just basic printout sheets not all fancy.