Butter and Sugar Siberian Iris

Availability: Out of stock

Having a Siberian Iris plant in your garden is like corralling a kaleidoscope of butterflies. The winged flowers hover over the strap-like leaves and flutter in the wind. Butter and Sugar Siberian Iris (Iris siberica 'Butter and Sugar') is a new look for these hardy garden plants!

Typically in shades of blue or white, the butter-yellow blooms of Iris are incredibly colorful. But Butter and Sugars' creamy yellow and white is a sophisticated and elegant addition. Waving above the tall strappy sword-like foliage, these clumping perennials shine in the sun!

Growing throughout USDA planting zones 4 to 9, these Siberian Iris grow under 3 feet tall and around 2 feet wide. Growing fast, these heavy bloomers pump out the flowers for bees, butterflies, and hummingbirds, as well as for your bouquets indoors! Iris are seldom bothered by Deer and rabbits and are generally pest and disease-free!

Planting and Application:

The color blends well with all other Siberian Iris and also with many other flowers in your perennial bed - especially yellow, blues, lavender, and creams! Even though you grow them for the amazing flowers, the grassy leaves look green and lush throughout the whole season.

They send thick roots down very deep which makes them great for stabilizing banks and even making them drought-resistant. They don't do well in the desert southwest, though! Plant in Cottage gardens, and mixed Perennial borders. Don't forget to snip some of the strong stems for fabulous floral bouquet additions too!

Siberian Iris will naturalize into their space, although you'll always want more of them. Massing multiple plants grouped together is the best way to use them, although we do have several ideas for you to consider in terms of placement. Use these ideas as jumping-off points for your style.

Butter and Sugar tolerates moist soil, so why not plant it in the splash zone of a fountain, in a Rain Garden, or the edge of a pond? Include special collected rocks and let them shine in this special setting. Try as a 'Thriller' in springtime container gardens. You'll love using these in your cut flower arrangements. Any way you use this beautiful plant, its sophisticated grace will delight you!

  • Beautiful Butter Yellow & White Flowers
  • Heavy Consistent Bloomer
  • Beautiful Strappy Upright Sword-Like Foliage
  • Clump Forming Spring Flowering Perennial
  • Pollinator Magnet & Gorgeous Ruffled Cut Flowers
  • Sun Gardens, Wetlands, Pollinator Gardens, Groupings & Containers

#ProPlantTips For Care

These tried-and-true garden staples thrive in full sun in almost any soil, including sandy soil, clay soil or even wet soil by a pond. These perennial Iris do best in well-drained soil with moderate to high moisture is perfect for Siberian Iris and in average garden conditions, add a layer of mulch around the base to conserve moisture and protect the roots.

Deadhead the flowers as they fade and trim back the foliage in the autumn. Every 3-5 years, divide the clumps and rearrange the rhizomes to keep them in tight formation and to prevent them from being buried too deeply, preferring to be planted more shallowly in the ground.

  • Full Sun & Afternoon Shade
  • Moderate Moisture Needs
  • Well-Drained Rich Soil
  • Deadhead After Flowers Fade & Trim Stems in Late Autumn
  • Pest, Deer & Rabbit-Resistant

Top off your garden with a dollop of Butter and Sugar Siberian Water Iris! It will certainly please you this year and many years to come. Don't wait and order yours from Nature Hills today!

Information About Bare Root Iris

Plant Iris about 15-18 inches apart. Bare root Iris are shipped as nice fresh-cut divisions with two to three fans of green tops. Keep in mind each Iris variety can have slightly different-sized roots.

When planting, make sure 1/3rd of the rhizome is exposed to sunlight with the roots buried underneath. Note, that it's best to cover the rhizome with a thin layer of mulch or leaves to protect it during the coldest months but make sure to uncover them in the spring.

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 NatureHills.com 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


Butter and Sugar Siberian Iris Is Suited to Grow in Zones 4-9
Growing Zones 4-9
More Information
Brand Nature Hills' Choice
Botanical Name Iris siberica 'Butter and Sugar'
Type Perennial
Mature Height 12 - 28 inches
Mature Spread 18 - 24 inches
Sun Exposure Full Sun
Soil Widely Adaptable
Moisture Moderate to High
Growth Rate Fast
Flower Color Buttery Yellow & Cream
Foliage Deep Green
Pollinator Friendly Yes
Pruning Time Late Autumn
Fragrant Yes