If you aren't going to the Montgomery Botanical Center for the palm sale, Leu's sale will feature lots of palms propagated at Leu.  Here's Eric's list from Palmtalk:

PALMS

Archontophoenix maxima
Archontophoenix myolensis
Arenga westhoutii
Bactris gasipaes- Peach Palm
Calamus castaneus- Rattan Palm (non-climbing)
Calamus erinaceus- Rattan Palm
Caryota obtusa- Mountain Giant Fishtail Palm
Caryota sp. "Himalayan"
Chelyocarpus chuco
Dypsis ovobontsira
Dypsis scottiana
Licuala fordiana
Livistona inermis
Livistona rigida
Myrialepis paradoxa- Rattan Palm
Phoenix loureiroi (humilis)
Sabal mauritiiformis
Trachycarpus martinanus
Trachycarpus wagnerianus
Attalea colenda
Veitchia joannis

PANDANS/ SCREW_PINES

Pandanus bernardii
Pandanus mc-keei
Pandanus solms-laubachii
Pandanus spiralis


TREES AND SHRUBS

Bixa orellana- Lipstick Tree
Camellia sinensis- Tea
Caesalpinia ferrea- Leopard Tree
Delonix regia - Royal Poinciana
Delonix regia (yellow form)- Royal Poinciana
Elaeocarpus decipiens- Asian Blueberry Tree
Ficus auriculata -Roxburg Fig
Liriodendron tulipifera- Tulip Tree (east central Florida ecotype)
Nageia nagi (Podocarpus nagi)- Nagi Tree
Podocarpus costalis
Pterygota alata (Sterculia alata)

Ceiba pentandra- Kapok Tree

VINES

Bauhinia yunnanensis- Purple Orchid Vine

TROPICALS

Acanthus montanus- Alligator Plant
Dracaena cambodiana
Dracaena draco- Dragon Tree
Musa itinerans ‘Blue Burmese'- Blue Banana  

Note:  I've seen Orlando-area tulip trees growing happily and fast on moist ground with royal palms and American elms in western Lake Worth.

Vendor list at the Leu Gardens website.  PDF.

As one of the garden forum regulars put it, there's no reason to buy more plants, but the show's too interesting to pass up.  

I'm looking to finally plant out three little palms that Leu donated to the Central Florida Palm and Cycad Society for last December's meeting.

That carpet of yellow flowers under a tree is amazing.  Looks like Narcissus, but has to be something else.