As if there weren't enough reasons to buy local, friendly big-box behemoth Walmart gives yet another shove. Think of your local garden store and how it's accountable to the community enough not to try and pass off fake flowers as real. Walmart, however, sees no qualms with such behavior.
Some friends recently bought two very different cacti from Walmart, intrigued by the tiny window ornaments' bright flowers. It turns out the flowers are fake—glued on at least. Even if the flowers did originate from a live cactus, the flowers, identical in everything but color, probably only belong to one plant or the other.
Both labels claim flowers; neither says anything about using fake flowers to demonstrate the cacti in bloom. The moral of the story: If you want to enjoy the crap you buy from Walmart, don't look at it too closely.