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Cityline® Rio Bigleaf hydrangea Hydrangea macrophylla

(7 REVIEWS)
Exposure
  • Part Sun to Sun
  • Sun

The optimum amount of sun or shade each plant needs to thrive: Full Sun (6+ hours), Part Sun (4-6 hours), Full Shade (up to 4 hours).

Flower Season
  • Spring
  • Summer
Mature Size
36" 36"
Height
24 - 36"
Spread
24 - 36"

This plant is hardy in zones 5 - 9

Hardy Zones

Zones are based on the lowest average temperature an area is expected to receive during the winter. They are used to determine whether a plant is likely to be perennial in your area. If your zone is equal to or higher than the zone listed for the plant, it will be hardy for you and thrive in your climate.

  • 5
  • 6
  • 7
  • 8
  • 9
What is my hardiness zone?
 

My Current Zone

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  • Details

    Features

    Small to medium sized early blooming hydrangea with large, long lasting flowers. Mildew resistant. Compact.

    Salt Tolerant
    Small or Miniature

    Characteristics

    Plant Type: 
    Shrub
    Shrub Type: 
    Deciduous
    Height Category: 
    Medium
    Garden Height: 
    24 - 36 Inches
    Spacing: 
    36 - 48 Inches
    Spread: 
    24 - 36 Inches
    Flower Colors: 
    Blue
    Flower Colors: 
    Pink
    Flower Colors: 
    Purple
    Flower Shade: 
    depends on soil
    Foliage Colors: 
    Green
    Foliage Shade: 
    Green
    Habit: 
    Mounded
    Container Role: 
    Thriller

    Plant Needs

    Light Requirement: 
    Part Sun to Sun
    Light Requirement: 
    Sun
    Maintenance Category: 
    Easy
    Blooms On: 
    Old Wood
    Bloom Time: 
    Early Summer
    Bloom Time: 
    Mid Summer
    Bloom Time: 
    Late Summer
    Hardiness Zones: 
    5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
    Water Category: 
    Average
    Uses: 
    Container
    Uses: 
    Cut Flower
    Uses: 
    Dried Flower
    Uses: 
    Landscape
    Uses Notes: 

    A dramatic centerpiece for mixed container designs. Also great for mixed borders and perennial gardens.

    Maintenance Notes: 

    Add aluminum sulfate to the soil to encourage blue flower color.

    Early blooming, compact plant.

    A small to medium, early blooming selection with large flowers that range from strong blue to purple depending on the soil; add aluminum sulfate to the soil to encourage blue flower color. The blooms are large and long lasting. This plant has excellent mildew resistance, and makes a great container plant. Like the other Cityline hydrangeas, Rio is compact so it does not need pruning. It's perfect for foundation plantings and milder-climate container gardens.

    Cityline® Rio Hydrangea macrophylla 'Ragra' N/A
  • 7 Reviews

    • I have grown this plant for probably 5-6 seasons in zone 5. It is in the correct location (part->full sun), well watered and not pruned. It dies back to the ground EVERY YEAR. I have seen a single flower on 4 plants in all that time. I plan to remove it and give it away or compost it. It clearly is not truly hardy in zn 5. They should relabel to zones where it actually performs as stated.

      Jennifer Dionne
      New Hampshire
      United States
      10 weeks ago
      Unsatisfied Did not survive, inferior performance or did not bloom well - won't grow again.
    • Since planting these in May they have taken off. So far I have one pink one and the rest bluish purple and I believe it because I did not include fertilizer in that one when I planted it. These are soooooo pretty and I can’t wait to see how big they get next year. Hopefully I won’t have to tend to them as much as I had to this year so far and it’s late June. But because they are in full sun and are babes I believe the harsh sun dries it out a bit so I have to water in early morning and evening when temperatures go above 90 degrees. I love these plants wish I could show pictures. Get you one or some, I got the gallon ones cause I like BIG! Some say I have a green thumb but I just love flowers anything you love you take care of!

      Arty John
      Michigan
      United States
      1 year ago
      Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    • I ordered six of these from Home Depot...received very small plants, five of which did not survive the winter. They were planted in May and cared for according to recommendations, but only one has come up (they didn't even get woody last year)...and the winter here in Maryland was very mild. Beautiful pictures, but for me, not a reality.

      Melissa
      Maryland
      United States
      1 year ago
      Unsatisfied Did not survive, inferior performance or did not bloom well - won't grow again.
    • I have yet to see blooms on this plant after 3 years. Same with the Berlin planted next to it. Venice, in a different location, is gorgeous with blooms every year. All are of the compact Cityline type.

      Cheryl
      Pennsylvania
      United States
      1 year ago
      Marginally Adequate Performed below expectations but may be willing to try again.
    • Looked great at first planted by the front door...then overnight all plants were completely devoured by deer. Won't grow back. Wish I had been warned. Can my $70+ be refunded?

      R Fong
      California
      United States
      2 years ago
      Unsatisfied Did not survive, inferior performance or did not bloom well - won't grow again.
    • i have never seen one flower since I got it two years ago. yes, it has been cared according to instructions.

      olga
      Massachusetts
      United States
      4 years ago
      Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    • I purchased the Rio Hydrangea 3 years ago as suggested by my local retailer..........I have yet to see them bloom. $70.00 later I am very disappointed.

      Carolyn Waterstradt
      Illinois
      United States
      6 years ago
      Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
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