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Fortnight Lily

As low as $118.89 was $144.99
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Butterfly Flowers!

Fortnight Lilies (Dietes bicolor) have dainty flowers that look almost like butterflies hovering over the strappy leaves. But don't let that daintiness fool you. These are one of the toughest and easiest plants to grow in your zone 8-10 garden.

They look exotic and almost tropical, but they can withstand inland heat and even an occasional hard frost. This is a great all-purpose plant to use in your sunny beds and borders. It is green year round and covered with flowers all summer.

The flowers are a pale shade of buttercream yellow and are highlighted by dark maroon blotches. They are pretty during the day, but positively glow in the evening when many other garden flowers are fading in the darkness.

Fortnight Lilies are drought resistant and are used throughout the Southwest in dry gardens, but they also love being by streams and ponds, too. They take the desert heat and the coastal cool with equal stride. Water to establish them, and then they are very drought tolerant once established.

Don't have a lot of space? That's ok, too, because these tough beauties will thrive in a big pot on the patio or balcony as easily as in the garden.

If you live in an area that requires fire-preventive landscaping, then you'll definitely want to add Fortnight Lily to your garden. It is in the short-list of fire resistant landscape plants.

This great plant will reward you with season after season of easy-care color and style. Order yours today!

  • Profusion of soft yellow and maroon flowers
  • Drought Tolerant
  • Dry or Wet Gardens
  • Firewise Variety

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

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.

Click Here to learn more

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.

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 14.95
20 - 49.99 17.95
50 - 69.99 19.95
70 - 99.99 24.95
100 - 129.99 29.95
130 - 130+ Approx 25%

Click here to see our full rates

Drought Tolerant, Fire-Resistant and Beautiful

The Dietes bicolor, going by the common name Fortnight Lily, for many years was botanically incorrectly named Moraea bicolor. Although debate began over the true identity in the 1840's, the distinguishing separation was not made until the last part of the 1800's.

In 1866, Friedrich Wilhelm Klatt classified the Moraea as Dieties, the distinguishing fact that the plants of the Moraea genre grow from a corm, where the Dieties all grow from rhizomes. This required a name change, but both names are associated with the plants still today.

Dieties bicolor, a native of South Africa, were first described as a part of the garden of the Comte de Vandes at Bayswater, England, in 1831. They are known to grow wild along the Kap River, Port Alfred, in the eastern cape in South Africa. A famous natural Reserve, the Kap River is home to many unique varieties of plants and animals.

Molecular analysis has determined the Moraea bicolor to be the most primitive of all of the 6 species of Dietes that are known.

Adapted to many climates and soil types, the Moraea bicolor requires little water once established. It is recommended for drought tolerant or xeriscape plantings, as well as container growing. It is considered a LOW water user by the California Department of Water Resources, Water Use Classification of Landscape Species (WUCOLS) list, requiring little water after being established.

Dieties bicolor is on all lists as a fire-resistant plant and should be considered for your defensible space planting in all firewise landscapes.


Fortnight Lily Is Suited to Grow in Zones 9-11
Growing Zones 9-11
More Information
Brand Nature Hills' Choice
Botanical Name Dietes bicolor
Type Perennial
Mature Height 2 - 3 feet
Mature Spread 2 - 3 feet
Sun Exposure Full Sun, Partial Shade
Soil Well drained
Moisture Medium
Growth Rate Medium
Flower Color Light yellow with maroon blotches
Foliage Perennial (evergreen)
Foliage Color Green
Pollinator Friendly Yes
Pruning Time Early Spring
Fragrant No