Before buying a flower garden seed roll you must determine the sun or shade requirements, the season the seeds are prepared for, and whether there is a special type of garden you wish to plant. While planting a spring garden is possible in most places, some seed packs advise that they are not recommended for the dessert. Fall gardens require more care in choosing the plants, since not every plant does well with shortening days and colder weather, but that depends on location. Pansies do well here where we rarely get freezing temperatures, and when we do have a freeze it is normally just a few degrees below freezing for a short period. But, plants that require increasing duration of sunlight, or warmer temperatures, will not do so well if planted in the fall.
Often sellers place things for sale by appropriate season, but since internet sales are worldwide the seeds sold in the fall may be intended for places where it is spring, like Australia. Check the time of year the seeds are intended to be used.
Special considerations might be flowers that attract butterflies or hummingbirds. Some garden rolls indicate they attract such welcome garden visitors. So, if you wish to watch the beautiful creatures of nature fly into your garden provide them what they seek.