I am copying a portion of the instructions that I send out with our rose plants. Remember you do not have a house plant. You have a plant which does best outdoors.

"Plants need to be potted up into 2 gal or larger pots upon receipt. They then should be grown for a few months until they double in size, or more. Use a high quality potting soil. This transfer allows greater root development and a corresponding increase in plant size. Remove from container (pushing from the bottom) and bury the plant a 1/2” deeper in the soil than when it was in the container. Fertilize weekly with a mild liquid fertilizer, or use a time release fertilizer such as Harrell's 16-6-11 or Osmocote 15-9-12 at the rate of 1 tablespoon per 2 or 3 gallon container. The addition of 1 tablespoon gypsum to each container is also suggested. Keep plants outdoors and sheltered from cold, high winds, and freezing temperatures until established. They should be kept in a shady area at first and slowly acclimated to direct sun. Avoid subjecting plants to frost until established. Water (not with purified water, tap water) frequently. Roses need water, they like damp soil but will not survive if the roots are left in wet water soaked soil. There must be holes in the bottom of the pot so excess water can drain off. Be cautious that the surface that the pot rests on does not block the drainage holes."

This time of year you should water daily. In Florida I recommend Jungle Growth for a potting mix. Some Lowe's and Walmarts carry it.

I picked up some of these minis over the course of a few months last year while I was working at a box store that had a floral department that sold these sorts of plants. One of the first things I learned is that the potting soil they use is kind of crappy- and they tend to cram several plants together in one pot. They kind of only mean for folks to keep them alive for a short time really, much like mums for fall or poinsettias at Christmas. And by they I mean third party sellers or consignees- these box stores don't do their own stock, but rather buy or consign from a grower.

It was shocking how many plants got chucked out and written off once they lost their bloom or the poor and undernourished soil along with employees that didn't know how to water correctly started telling on them.

But over the months I kept my eye out for blooms I liked and could save while "still almost good" before they got tossed due to being done blooming. Lost some from them being crammed and not happy and watering oops at first. I'd never tried roses like this before, but I couldn't resist their little blooms. Then I started transplanting individually into bigger pots with better quality soil and got them all cosseted up through the rest of winter- thanks to some timely advice from folks around here... I now have a half dozen small but healthy roses in half-gallon pots that got put out on the porch a couple weeks ago once it finally got nice enough outside. They are growing nicely, will need the bumping up to bigger pots before too long now. I didn't transplant up into as large a pot as roseguy suggests. My roses
came 3-6 plants per 4-6 inch pot, and I transplanted up into 1 per
half-gallon pot. It's what I had on hand and space for indoors in a good
spot till spring. Only problem is, now I have no idea which colors survived and no idea when they might bloom again, lol. I got them in bloom during the cold when roses around here aren't growing, let alone blooming.

So, I can tell you it is possible to get these little roses to go. It's for sure harder if you don't repot and tend them right away while they establish in. Not sure if yours will or not- couple of my little scrappies turned out to be hearty survivors and others I thought looked like they should take just fizzled out.

The sooner you get them separated up and into bigger pots with better soil and nutrients the better. If you can get them outside for the summer- do. Just be careful and remember they will probably need a bit of hardening off- they are used to indoors and more climate control.