Uh... this isn't quite what I was thinking about but never mind... Let's have a look at useful sentences when shopping.
Could I use them when buying plants?
Uh... we'll see.
Sales assistant:
Quelletaille faites-vous ?
What is your size?
Vous voulez une veste de quelle couleur ?
What colorjacketwould you like?
Ça vous plaît ?
Do you like it?
Comment payez-vous ?
How would you like to pay?
Customer:
Est-ce que je peux l'essayer ?
Could I try it on?
Je fais du40.
I'm a size 40.
Je l'achète.
I'll take it.
In France, the sizes are more often given with a number thana letter. Depending on the store, the size chart can differ a little but it usually follows this: