All about Roses in Colorado

Posted by gardensoul on April - 21 - 2013

Rose Olympiad varietyRoses are one of the most popular flowers in the world.  We love their beautiful display and fragrance, often choosing roses at the florist to mark important events or holidays in our lives.  It’s natural to want to grow these shrubs in our home landscape.  Colorado weather offers some challenges.  Here are some tips to make your rose growing experience a positive one!

  • Requirements
    • At least 6 hours of direct sunlight (preferably morning sun)
    • Location where roots don’t compete with shrubs or trees)
    • Prune in spring (last week in April or first week in May)
    • Fertilize 3 times with balanced fertilizer
      • Late April to mid-May
      • Mid-May
      • Late July
    • Water well, especially after fertilizing, in hot weather or drying winds (2″ per week or 2-3 times/week in hottest weather)
    • Soil pH of 6.5
    • Winter watering and protection (plant hybrid tea graft below soil level)
    • Deadhead to encourage blooming, cut hybrid teas to next five-leaflet on stem
  • Best advice and reference for growing roses in Colorado
  • Roses are categorized into 5 groups
    • Hybrid Teas (Florist-type roses, repeat bloomer, single bloom per stem)
    • Grandiflora (True American category, repeat bloomer, smaller blooms in clusters, can cut individuals in cluster)
    • Floribunda (Medium to small blooms in clusters, continuous bloom, easier to grow, for mass effect rather than cutting)
    • Polyantha (Parent of Floribunda, smaller, very hardy, extremely free-flowering for small spaces and gardens)
    • Miniature (Refers to the size of the bloom, constant bloomers with plant size ranging from 5-8 inches for micro-minis up to the larger 18-24 inch plants. Can be grown in containers or garden beds.  Good for cutting)
    • Mini-flora (New category, roses intermediate in bloom)
    • Climbing (Long arching canes, bloom once in spring with intermittent bloom into fall)
    • Shrub (Very popular, diverse ease-of-care group for informal masses of color)
    • Species (Wild rose appearance usually with rose hips into the winter)
    • Old Garden Roses (Precede modern roses, diverse, some disease prone while others are tough and easy to care for)