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Plant Description

Aunt Shirley Louisiana Iris is a lovely specimen with bright, rose-pink blooms with golden-yellow signals and attractive, green, sword-like foliage that grow 24 to 32 inches tall. Aunt Shirley Louisiana Iris blooms early to late Spring, depending on zone.

Height   Mature plants grow 24 to 32 inches tall

Spread   Mature plants spread 12 - 18 inches 

Light Requirements   Full sun to part shade

Moisture Requirements   Requires moist soil or shallow water--with up to 3 inches of water above the rhizome

Blooms Blooms early to late spring, depending on zone

Hardy   All Louisiana Iris are hardy in zones 6 - 12

Divide   Divide your Louisiana Iris every two to three years, as needed. Divide iris in late summer or early fall.


 Planting Instructions

The best time to plant your Aunt Shirley Louisiana Iris is in August or September, they can be planted in the spring, but it may affect that years bloom--(Iris may be planted anytime in Florida)

Plant your Louisiana Iris in moist, slightly acidic soil with rich, organic compost added. Dig holes a little larger than the iris rhizomes and cover with an inch inch of soil, with roots down and pointed side up. Space them 12 inches apart in your terrestrial garden. Louisiana iris may also be planted in containers and placed in your pond with water over the rhizomes or in bog filters, which help to remove nutrients from the water before it is cycled back into the pond, thus helping to avoid algae issues. (When placing your Louisiana Iris in the pond, use heavy loam soil and skip the rich, organic compost and add fertilizer tabs instead throughout the growing and blooming months (May through September).

What Is Loam Soil?

Loam soil is a good mixture of Topsoil and Sand

If you are lucky enough to have good topsoil in your backyard, by all means, use your topsoil. All you will have to do is add fertilizer. If you are not so lucky--and your backyard is sand or heavy red or yellow clay, you can mix up a batch of loam soil.

 You can create your own loam soil by mixing these two ingredients together

  • 2/3  Inorganic Topsoil (Little or no organic material added)
  • 1/3  Pool Filter Sand

 Mix together thoroughly with a little water. Your soil should clump when squeezed. If your soil is mixed properly, it will not muddy your pond water.

You can purchase inexpensive bags of Topsoil at Lowes or Home-Depot. Don't buy brands like Scott's or Miracle-Gro, as they will contain too much organic matter that can foul your water. Buy an unbranded bag of topsoil instead.

You can purchase Pool Filter Sand at any store that sells pool supplies.

Loam soil is well suited for all aquatic plants (except oxygenators). Oxygenators rarely need to be planted, just anchored in the substrate or in a container filled with sand or 1/8  inch pea gravel.

Sand holds little water but does allow for aeration and drainage.

Some DO's and DON'TS regarding Aquatic Planting Soils  

DO NOT use potting soils ( as they are too light and will float right out of the pot). Potting Soil has organic material that will rot and foul your water!

DO NOT add too much composted material (as it is too rich in organic matter and it will ferment underwater and destroy the ecology of your pond).

DO NOT use 100% calcined clay as there is no nutritional value in calcined clay.

DO NOT add rocks, stones or pebbles to the top of your planting container as this will inhibit the growth of your plants. Plants do not grow in rocks and stones in nature!

DO NOT purchase API Aquatic Planting Media or Microbe-lift Aquatic Planting Media as these products are NOT suitable for waterlilies, lotus or most other pond plants. They are suitable for submerged grasses ONLY!

Fertilizing Instructions

Fertilize the Louisiana Iris in your pond with Waterlily World Fertilizer Tabs+ Humates for optimum growth, best bloom and ease of use. Simply press the fertilizer tabs into the soil near the roots of your iris rhizomes. Do this once a month throughout the growing/blooming season, May through September.

Pondmegastore Tip Large Fabric Planting Containers are beneficial for your Louisiana Iris in the pond! Fabric planting containers allow oxygen to reach the roots of the plants and also gives the roots access to nutrient rich water--both of these helps plants to grow larger and stronger!

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