"Yellow flowers mean friendship."

In some cases, this may be correct, but it's not true with tulips (or with a number of other flower,
for that matter). Yellow tulips symbolize hopeless love. Yellow carnations symbolize rejection or
disdain. Marigolds, which are yellow-gold, can symbolize jealousy, grief, and cruelty. So don't just
send any yellow flowers; you might send the wrong message! ~ Answers.com

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