Roses come back weaker and smaller every year even with fertilizer and winter...

Asked June 21, 2016, 12:02 AM EDT

Roses come back weaker and smaller every year even with fertilizer and winter cover my knockout and climber died back complety have weak stems and are only 1ft tall. Barely any blooms. Used wire cage with oak leaves and we had a mild winter. Ant ideas on what the problem is?

Chisago County Minnesota roses diagnosis of plant problems knockout roses

1 Response

Thank you for the question. We are sorry that despite your best intentions, the roses aren't doing well! According to our Extension website: http://www.extension.umn.edu/garden/yard-garden/flowers/hardy-roses/, hardy roses will grow and bloom well if you:
  • Provide a well-drained site with at least six hours of direct sun daily.
  • Use an organic mulch to eliminate weeds and conserve moisture.
  • Supply one inch of water weekly, from a combination of rainfall and irrigation.
  • Maintain adequate soil fertility, but don't fertilize after August 1, to allow plants to harden off properly before winter.
Evaluate where your roses are growing and move them if the growing conditions don't meet the description above. Read this Illinois Extension publication for more information on proper planting and rose care: https://extension.illinois.edu/hortihints/0504c.html

Thank you for contacting Extension.