in my experience....... plants from a florist go thru a a slump when u first put them in a home enviroment... I mean after all.. they are used to PERFECT TEMP , PREFECT LIGHTING, etc... they may appear to die off and then may get another healthy spurt once it adjusts to it's new living arrangments. Also, More florist plants are planted in VERY porous soil.... therefore the water drains out too quickly for the plant to really have a chance to absorb much... they tend to do well if u will repot them ( many are also root bound- so u may need slightly bigger pots) using good potting soil.