Cityline® Rio Bigleaf Hydrangea

Availability: Out of stock

Cityline® Rio Bigleaf Hydrangea (Hydrangea macrophylla CITYLINE Rio 'Ragra') is a small, ornamental shrub with magnificent flowers. Use them in stylish pots or as part of a garden border planting. Rio Hydrangea is a small plant that knows how to draw attention and become an exceptional visual standout in your landscape!

This great new Hydrangea series from Germany has tight, compact growth and large flowers that bloom in early summer, then last through until fall. The strong stems can easily handle the large heavy, blue to purple variegated flowers that transform to a greenish hue with maturity.

Hardy throughout USDA growing zones 5 to 9, they tolerate heat but not full sun in the warmer of their favored growing zone range. As with most Bigleaf Hydrangeas, flower color can be manipulated with a few simple additions to the soil. For blue flowers, the soil must be more acidic and for pink flowers, your soil must tend toward alkaline, just additions to the soil pH as necessary.

Planting and Application:

Deciduous Bigleaf Hydrangeas are great for low hedges and property division! Growing to a demure 2-4 feet mature height and spread, smaller shrubs are great for including in mixed-shrub borders and as backdrops to smaller perennials. Mix among Roses for a classic and romantic pairing!

Use Rio as a single smaller specimen in a large upscale pot, or include it among mixed plantings on your porch or patio! This smaller-sized shrub is perfect for container gardening and small space landscaping! The mophead blossoms comprised of tiny florets are a huge draw for pollinators! Include among butterfly gardens, and update a tired cottage border with these uniquely hued shrubs.

  • Outstanding Purple & Green Mopheads
  • Strong Branches & Rounded Shape
  • Great in Containers & As Cut Flowers
  • Smaller Size & Great Small-Space Gardening Ornamental
  • Low Definition, Cottage Gardens, Beds & Borders

#ProPlantTips for Care:

Tolerating full sun and partial shade, favoring morning sun and afternoon shade in hotter climates, Hydrangeas do best when planted in moist, well-drained soil. The bloom color can be changed by adding aluminum sulfate, or using lime to intensify the deep colors of the flowers. Rio Hydrangea is a tough little plant and even mildew resistant!

  • Full Sun & Partial Shade
  • Moist To Average Moisture & Mulch
  • Almost Any Well-Drained Soil
  • Color of Bloom is pH-Dependent
  • Powdery Mildew Resistant

Cityline® Rio Bigleaf Hydrangea is a stunning plant for your yard and will look impressive on your kitchen table as a cut flower as well! You can't go wrong with a Rio Hydrangeas for durability and the strength to support its impressive, massive flowers. Get even more support by ordering your next landscape additions from the experts at!

Buying Options for Plants

Nature Hills sells a large variety of plants with several options available. Plants are offered in both potted containers and as dormant bare root without soil. Here is a helpful resource to understand your options as you create a beautiful landscape with help from Nature Hills.

Ever wonder what a larger plant will mean for your landscape? Container Sizes are really all about the age of the plant!

Seasonally, Nature Hills offers hand selected, high quality bare root trees, shrubs and perennials. Bare root plants are sold by height from the top of the root system to the top of the plant. Plants may be taller than the height minimums.

  • Popular sizes of select trees are 1 foot, 2 feet, 3 feet, etc.
  • Popular sizes of select bare root plants is 1 foot, 18 inches, etc.

Nature Hills Container Size by Volume

Keep in mind, specific varieties and different growing conditions can affect the rate at which plants grow. Variations in size may occur.

Young Plants to 18 Months
Size Volume
2"x2"x3" Ranges from .18 to .21 dry quarts / .198 to .23 dry liters in volume
4.5" Container Equal to .65 dry quart / .72 dry liter in volume
Sprinter Pot Equal to .63 dry quart / .69 dry liter in volume
4" Container Ranges from .31 to .87 / .35 to .96 dry liter in volume
6" Container Equal to 1.4 dry quarts / 1.59 dry liters in volume
1 Quart Equal to 1 dry quart / 1.1 dry liter in volume
5.5" Container Equal to 1.89 of a dry quart / 2.08 dry liters in volume
4"x4"x5" Ranges from .8 to 1.1 dry quarts / .88 to 1.2 dry liters in volume
4"x4"x6" Ranges from 1.0 to 1.3 dry quarts / 1.1 to 1.41 dry liters in volume
4"x4"x9" Ranges from 1.1 to 2.1 dry quarts / 1.2 to 2.3 dry liters in volume
4"x4"x10" Ranges from 1.7 to 2.3 dry quart / 1.87 to 2.53 dry liters in volume
Plants 18 Months - 2.5 Years Old
Size Volume
2 Quart Equal to 2 dry quarts / 2.2 dry liters in volume
#1 Container Ranges from 2.26 to 3.73 dry quarts / 2.49 to 4.11 dry liters in volume
5"x5"x12" Equal to 3.5 to 4.3 dry quarts / 3.85 to 4.74 dry liters in volume
Plants 2 - 4 Years Old
Size Volume
#2 Container Ranges from 1.19 to 1.76 dry gallons / 5.24 to 7.75 dry liters in volume
#3 Container Ranges from 2.32 to 2.76 dry gallons / 10.22 to 12.16 dry liters in volume
Plants 3 - 5 Years Old
Size Volume
#5 Container Ranges from 2.92 to 4.62 dry gallons / 12.86 to 20.35 dry liters in volume
#7 Container Ranges from 5.98 to 6.08 dry gallons / 26.34 to 26.78 dry liters in volume

About Plant Sentry™

Plant Sentry is designed to protect both consumers and the nursery trade from invasive plant pests and diseases. Sites that display the Plant Sentry protection badge are protected from consumers buying and nurseries shipping material carrying invasive pests and diseases.

This proprietary eCommerce software prevents the shipment of a restricted plant to each state. The Plant Sentry system includes a shipment certification program. The Plant Sentry Compliance Officer works closely with and each nursery or fulfillment center to ensure only compliant plants are sold to customers.

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Plant Sentry


To obtain a more accurate shipment time-frame, simply enter your zip code in the “Find Your Growing Zone” box to the right. Our plants are grown all over the country and lead time on items may be different because of this. Once your order is placed, you will also receive the specific shipment time-frame information as part of your order confirmation. Once an item ships, you will receive shipment notification and tracking numbers, so you can follow along while your plant travels to your doorstep. We use FedEx, UPS, or USPS at our discretion.

Shipping Rates

At Nature Hills we handle, package and ship the products you order with the utmost care to ensure healthy delivery. Shipping and handling charges are calculated based on the tables below. Please note that some items include an additional handling surcharge, these will be noted on the item's product page.

From To S&H
0 - 19.99 18.99
20 - 49.99 21.99
50 - 69.99 24.99
70 - 99.99 29.99
100 - 129.99 34.99
130 - 149.99 41.99
150 - 150+ Approx 27%

Click here to see our full rates


Cityline® Rio Bigleaf Hydrangea Is Suited to Grow in Zones 5-9
Growing Zones 5-9
More Information
Brand Proven Winners ColorChoice
Botanical Name Hydrangea macrophylla CITYLINE Rio 'Ragra'
Type Deciduous
Mature Height 2 - 4 feet
Mature Spread 2 - 4 feet
Sun Exposure Full Sun, Partial Shade
Soil Well Drained
Moisture Moderate
Growth Rate Medium
Flower Color Blue or Purple
Foliage Color Green
Pollinator Friendly Yes
Pruning Time After Flowering
Photos courtesy of Proven Winners, Inc -