Firefly Bigleaf Hydrangea

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Big bi-color blooms on a classic French Bigleaf, the Firefly Bigleaf Hydrangea (Hydrangea macrophylla 'HORCOS') is a unique, semi-double mophead! Reblooming rounded clusters of cream and red blossoms almost don’t look real! The vivid color of the blooms looks to have an artist's touch all summer until fall, when they become dried pompoms for indoor décor or winter interest.

Backed by a dense clump of very broad deep green leaves that have the classic Hydrangea quilting and toothy edges for an elegant, soft effect in the landscape. The big round clusters are tightly packed and look incredible in the garden, in a vase bouquet or as specimen plants in large planters! Plus, they return for a second flush of blooms later in the growing season.

Firefly is hardy in zones 6 and up, these are fairly heat-tolerant! Planting your Firefly in acidic soils will change the red/cream combination to more of a red/pink hue.

Planting and Application:

Mophead Hydrangeas are fantastic back of the border backdrops and accents. So use long rows of them for privacy and screening and elegant property division. Great facer shrubs for larger, leggier plants and trees to hide their bare stems, and these tough plants add a graceful element to your home’s foundation planting and friendly fences separating your front yard from the sidewalk.

Firefly Bigleaf Hydrangea looks amazing in Cottage and cutting borders, behind Perennial and cutting gardens, and are of course ideal in the pollinator garden! Indoors or out, let these vivid blooms create colorful hedges and focal points! You’ll love the bouquets and dried décor you will make!

  • Bi-Color Red & Cream Semi-Double Flower Clusters
  • Reblooming Mophead & Pollinator-Friendly
  • Broad Rich Green Leaves
  • Heat & Humidity Tolerant Mid-Sized Shrub
  • Hedges, Privacy, Foundation & Specimen

#ProPlantTips for Care:

The best time to prune Bigleaf Hydrangea is as they break dormancy. Prefers afternoon shade in hot climates, but morning sun to dry the leaves of dew. Plant in an enriched, well-drained and consistently moist soil environment.

  • Full Sun, Appreciates Afternoon Shade/Part Shade
  • Prune in Winter or Early Spring
  • Highly Organic, Enriched Well-Drained Soil
  • Regular Moisture - Mulch Beds Very Well
  • Slight Color Variation in Acidic pH

The Firefly Bigleaf Hydrangea is just what you need to add some serious color to your landscape this year! Order your own new and improved Hydrangea varieties from today and love your garden!

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
#6 Container Ranges from 5.25 to 6.01 dry gallons / 23.12 to 26.42 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.

Due to winter weather we have put a hold on shipping to the areas shown below in grey. You can still order now and we will ship the plant to you during an appropriate time for your zone.

*If you have found your zone already, it will be highlighted in the table below.
Color Zone Times
3 Spring 2019
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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 24.99
20 - 49.99 29.99
50 - 69.99 34.99
70 - 99.99 39.99
100 - 129.99 44.99
130 - 149.99 48.99
150 - 150+ Approx 28%

Click here to see our full rates


Firefly Bigleaf Hydrangea Is Suited to Grow in Zones 6-9
Growing Zones 6-9
More Information
Brand Nature Hills' Choice
Botanical Name Hydrangea macrophylla 'HORCOS'
Type Deciduous
Mature Height 4 - 5 feet
Mature Spread 4 - 5 feet
Sun Exposure Full Sun, Partial Shade
Soil Well Drained Soil
Moisture Medium
Growth Rate Medium
Flower Color Pink/Red in higher pH, Purple tones in acid soils
Foliage Color Green
Fall Color Yellow
Pollinator Friendly No
Pruning Time When Dormant
Fragrant No