Can You Plant a Rose Bush in a Metal Pot?

Benefits

• Metal pots work well if you have limited space because pots can fit in small spaces like patios or balconies. Unlike heavier containers made of clay or wood, metal pots, such as those made of zinc, are lightweight. This makes them a smart choice if you have back problems or limited mobility. Light metal pots can be easily reached if placed on a bench or stand, moved into sunny spots if the area has too much shade, or moved inside during inclement weather.

Choosing Container Material

• Galvanized and non-galvanized steel pots work well for roses. Galvanized steel will appear shiny at first, but will corrode and fade over time. It is also high in cadmium and zinc, which can cause soil toxicity at high levels. If this concerns you, use non-galvanized steel. To prevent stainless steel and other metals from rusting, place an inconspicuous plastic pot or liner inside the metal pot and pot your rose bush in the small pot or liner. Zinc pots will rust only if exposed to extreme weather for long periods. For the look of metal without corrosion, try a faux metal pot or planter made of polymers, plastics and resins. Faux metal resists rust, is usually lightweight and is less expensive than metal. If the metal pot does not have drainage holes, drill them or choose a container with holes.

Pot Size

• Choose a pot that is large enough to hold a mature plant of the variety you have chosen. For large floribunda, shrub roses, hybrid tea or grandiflora roses, use a 15 gallon pot. For smaller floribunda use a 10 gallon pot and for miniature roses, use a 4 to 5 gallon pot.

Planting

• Roses need drainage, so plant them in a mix that contains perlite. Successful formulas include sterile soilless mediums with up to 50 percent perlite, or a mixture of 30 percent compost, 30 percent perlite and 40 percent topsoil. To help roots develop, add 1/4 cup superphosphate per large pot or 1 tablespoon per small pot. Change the soil once every three years and fertilize once per week at half the recommended amount, typically 1/2 tablespoon per 1 gallon of water. Because metal containers aren't porous, they will retain moisture longer than porous pots. Water when the top 1 inch of soil is dry, up to twice daily in hot weather. Reflective metal pots can also conduct heat, which can be a good thing if temperatures suddenly drop. On the flip side, placing metal containers in bright sun can scorch roots, so avoid leaving pots in the hot sun all day. Experiment to find the best spot for your rose.