I noticed watching tv shows like cake boss, and Ron Ben-Israel on his website, they seem to stick the flowers directly into the cakes? Are they really just sticking wires into these cakes or am I missing something? I do not see any type of straws or anything, someone please fill me in!

Yup...you saw it just the way they do it! I've seen a lot of the 'top cake people' do the same thing.

I just don't understand how flower pros can stick poisonous flowers right into the cake. The stems are not covered with tape NOTHING! Take hydrangeas for instance "Toxicity Category 1 - Plants can cause systemic toxicity varying from mild abdominal cramping to serious cardiac complications." Some people are so sensitive that even touching the leaves is very serious. But yet all the "flower pros" seem to do it anyway. How many cakes have you seen with hydrangeas?

http://www.aragriculture.org/horticulture/ornamentals/toxic_plants.htm

A lot of TV cakes aren't going to be eaten though.

I've also seen them stick wired gumpaste flowers directly into the cakes. The wire is directly in the cake itself.

Not just real flowers, the sugar flowers on floral wire! I am more afraid of the floral wires than I am the real stems! What about the floral wires? And, yes, some of these cakes are going to be eaten!

I don't watch any of the cake shows on TV. (I don't subscribe to cable). Is there any chance that they've already inserted a straw and trimmed it to the right length before they show the flowers going in? The straws I use for single wires are so thin that you can barely see the hole where they go in the cake.

Texas Rose - I went to a Cake Boss seminar and someone asked Buddy the question and he said yes, he sticks the wire directly in to the cakes. From what I understand, so do many of the others.

Yep, and it makes it no less gross or less potentially dangerous just because some quasi-celebrity does it.

I know this is not directly answering the OP ? but............

Simple solution: dip the wire/stem in chocolate OR as Texas said:
..........The straws I use for single wires are so thin that you can barely see the hole where they go in the cake............

I believe these are called 'coffee stirers'.

I use tiny-diameter short straws (about 5" long) to insert wires 'directly into a cake'. These are not coffee stirrers, just miniature straws.

Ron Ben Israel only puts covered wires into his cakes. He has said that he has no problem putting flowers into cakes if they are on skewers or covered wires. If the wire is completely covered then the metal is not in contact with the cake. I do the same. RBI has been making cakes for years and if there was a problem with them doing it, they would have stopped.