There are pros and cons to perennial plants and flowers and annual plants and flowers. Those that are perennial will come up year after year, and usually cost more. Annuals are often planted as seeds and nursed into full flowering plants that require weeding and need to be re-planted each year.
You might decide to plant a combination, but those that have little time to work in the yard always choose perennial, because they practically grow on their own and don't require much more than cutting them back at the end of the growing season. Typically, the flowers aren't as vibrant as annuals, but there are some perennial plants that can bloom all season and be beautiful and vibrant, such as roses and day lilies and includes seasonal flowers such as daffodils, tulips, lilac bushes, peonies and daisies.
Annuals cost very little, if you plant them from seed. If you want uniform placement, you might consider starter plants to give you instant color and give them an advantage over the weeds. They are cheaper plants initially, but they require more work such as constant watering, weed pulling and dead-heading. For those that like to garden, they may not mind this hobby. You can find a wide variety of annuals and for those on a budget, annuals are the best choice.
The main advantage to perennials is that they can easily adapt to weather conditions and are hardier than annual plants. They are normally planted once, but bloom year after year. Some perennial plants only bloom every other year, and newly planted perennial plants may not bloom the first year or two. You have to carefully consider placement, since it is harder to transplant them once they have taken root. The other great thing about perennial plants is that you can add a few plants a year to your landscape until you get all of the color you want. When it comes time to sell your home it is considered a landscaping investment .
With annuals, the main advantage is the variety and bright colors you can get. The affordability is another factor, and you can change the look of your landscaping every year. The main disadvantage is that they are not as hardy and the growing season is not as long as perennials, in most cases. If you have an extremely hot and dry summer, or if fall comes early, your plants may die. Because they aren't as hardy, you may need to consider a sprinkler system, and placement can be helpful in keeping them alive.
When analyzing the pros and cons of perennial plants versus annual plants for your garden, it might be best to make perennial plants a stable part of your landscaping and supplement it with hints of colors from annual plants, in case weather conditions are unfavorable. This will allow you to continually add to your landscape investment with perennials each year and add hints of plant colors and variety in strategic areas with annuals for a beautiful display.