Reduce costs by making planters for your annual or perennial flowers instead of buying a bunch of pots and boxes at the store. Almost any container deep enough for a plant's roots will work as long as it holds water and has good drainage through the bottom. Additionally, you can reuse items that otherwise would have ended up in the trash. You'll be helping the environment and you'll have a nice collection of interesting flower planters in no time.
Use old plastic milk bottles for annual flowers. Cut the tops off of the bottles so you have an open square. Use a nail to poke several drainage holes in the bottom, and paint the bottles as desired.
Find smaller bottles to start seeds or hold young transplants. Large, gallon-sized bottles are deep and wide enough to accommodate most types of annuals. Fill the bottles with potting mix, plant the flower seeds or seedlings and water them in.
Drill drainage holes into the soles of old leather shoes or boots. You can use canvas sneakers, but they will dry out quickly. Fill the shoes with potting mix and plant small annuals like pansies, petunias or alyssum.
Reuse old aluminum pots or old crockery instead of throwing it away. Drill holes in the bottoms for drainage and add the soil and plants.
Use medium-sized pots and bowls for flowers such as marigolds, poppies and coreopsis. Soup pots or large bowls with a depth of at least 12 inches will hold flowering perennial herbs such as lavender, rosemary or thyme. Large pots will also work with trellised flowers like morning glory.
Save your broken electronics such as stereos, televisions and kitchen appliances. Take the electrical insides and other plastic pieces out and save the casings. Many types of casings have holes for ventilation in the bottom, so they already have good drainage. If open side to add the soil into doesn't already exist, choose a level side to set the casing on and saw an opening in the top.