By John Towfighi, Norma Galeana, CNN (CNN) — Mother’s Day expenses can pile up fast. There’s brunch. Gifts. Cards. And, of course, flowers –– which might not break the bank, but are getting pricier because of higher costs along the journey from garden to table. Flowers delivered to loved ones on Mother’s Day travel through a fine-tuned supply chain before being arranged in a bouquet. A rose picked in Ecuador is flown to Miami by cargo plane and …