There are many situations in which you need to ensure your plants and flowers can survive even if you're not there to water them. Most common are when you go away for vacation and when you have a second home. But using everyday techniques and simple tools, you can ensure your flowers and plants continue to thrive even if you're unable to water them personally.
There are a wide variety of self-watering pots and planters on the market that can ensure your flowers stay watered for one to three months. Figure out how long your flowers will need to survive without you, then visit a local nursery or garden center to select self-watering pots that will meet that need. Repot your plants and flowers into them to begin enjoying hands-free enjoyment of your flowers.
Drip spikes are a relatively inexpensive way to ensure your flowers and plants stay watered by themselves. These don't often last as long as self-watering pots, but some versions can water your flowers for several weeks without effort from you. Drip spikes are small funnel like spikes that are driven into the soil near the base of your flowers and have a water reservoir sitting on top. The water is released slowly, in drip fashion, through the spike into the soil.
Rain gardens are gardens that are purposely designed to take advantage of natural rainfall. They're also an excellent way to take advantage of natural depressions or low spots in your yard and garden. If you already have low spots in your yard, you can dig a small trench from the rain gutters of your house to the low lying area. Rainfall runs off your roof and into the low-lying area of the yard. You can then plant your flowers in that low-lying area, and let the extra accumulation of natural rainfall keep them watered automatically for you. If you don't have existing low-lying areas in your yard, it's easy to create one or more by simply digging where you'd like the garden to be. Create a shallow basin or low-lying area compared to the rest of the yard.
Some areas receive a lot of rain throughout the year, so a rain garden in those areas is best planted with flowers that like a lot of water such as lilies, tulips or fast growing vines like morning glory.
For large flower gardens, using automatic watering systems is the most practical solution. Regardless of whether you water the flowers with sprinklers, drip systems or soaker hoses, you can install automatic timers on your watering system and configure them to turn the water on at specific intervals.