Mulched in Autumn to protect from the cold and in Summer to keep the moisture in and to prevent the sun burning the rhizomes. Every 3 or 4 years the rhizomes will need to be thinned out.
When doing this it is best to remove all Irises and renew the soil by adding in broken down organic matter as the original old soil will be stale and worn out.
Public Holidays am — pm Saturday, excluding public holiday weekends Customer Service Available: am — pm Monday to Friday. Navigation MENU. What is Louisiana Iris? Benefits of Growing Louisiana Iris Louisiana Irises can be grown in your flower garden or submerged in water in pots as pond water plants.
Plant Size Sizes vary. Soil Preparation They require acidic soil. How To Plant Louisiana Iris Plant in full sun to dapple shade, 50cm apart with the rhizome just below the soil surface. In gardens and landscapes, hybrids of our native species bloom in a rainbow of colors with large, showy flowers on tall stems.
Their extraordinary beauty and ease of care have made Louisiana irises increasingly popular all over the world, but they still deserve more recognition and use here in their home territory.
Louisiana irises fit in well with the growing trend toward more use of native plants. I try to encourage this trend whenever possible, and it's easy to recommend this reliable, native flowering perennial for our garden beds. It should be safe to plant tender bedding plants now such as marigolds, zinnias, blue daze, pentas, celosia, salvia, portulaca, purslane, lant…. Five species, Iris brevicaulis , Iris fulva , Iris giganticaerulea , Iris hexagona and Iris nelsonii are known as the Louisiana irises.
Although I. But only in south Louisiana do all five species occur together, and I. There were once vast native stands of these irises in Louisiana, particularly in the area now covered by New Orleans. These five iris species will readily interbreed.
The crossing, or interbreeding, of these species has resulted in the modern Louisiana iris hybrid cultivars we grow today. Their large attractive flowers cover a broad range of colors, including many shades of blue, purple, red, yellow, pink, gold, brown, lavender, burgundy and white. Cultivars with bicolor flowers of contrasting colors, bright yellow signal markings or ruffled petals add to their beauty.
The best time to plant Louisiana irises is in August and September when they are dormant, but you can plant them now while they are in bloom and pick out colors and types of flowers you like best. When planted now, however, Louisiana irises need to be handled carefully to avoid damaging the foliage and flower buds. Although in their native habitats the original species often grow in swamp or bog conditions -- and Louisiana irises make outstanding additions to aquatic gardens -- they also can be grown in ordinary garden beds with excellent results.
Their culture is really quite easy as long as you provide the right growing conditions and are familiar with their seasons of growth and dormancy. Louisiana irises should be grown with as much direct sun as possible. Although they will tolerate shade for part of the day, at least about six hours of direct sun is needed for good blooming. Avoid locating beds near large evergreen trees that create shade and extensive root systems that would compete with the irises.
When preparing a spot to plant Louisiana irises, incorporate a generous 3-inch layer of compost, rotted manure or peat moss and a general purpose fertilizer following label directions. The plants prefer a soil high in fertility and organic matter.
Growing Louisiana Irises - General Information. Louisiana irises need not be grown in water or under bog conditions, however, don't overlook this important use of the native iris.
Water gardening has become very popular in the last decade and Louisiana Iris are a natural in this setting; however, for decades they have been grown under ordinary garden culture with excellent results.
The native iris through the work of backyard hybridizers and a few nurserymen, have transformed this simple wild flower into Belles of a Mardi Gras Ball.
The culture is very easy, provided a few simple rules are followed. The conditions described are for Louisiana. General Location. Louisiana irises should be grown in as full sun as possible, but under no circumstances should they get less than a half day of sunlight. The irises will not bloom properly in dense of full shade. Also, the irises should not be grown in competition with large trees or plants with extensive root systems that would use most of the soil moisture.
Two types of garden locations can be considered: beds containing only Louisiana irises, or beds containing Louisiana irises mixed with other plants. Louisiana irises can be mixed with most of the smaller ornamental plants, subject only to the limitations of acid soil and extensive watering needed when drought occurs during the growing season. Soil Conditions and Preparation. An acid soil is a must for Louisiana irises; soil pH of about 6. Any soil suitable for azaleas and camellias is ideal.
Irises also need a soil high in fertility and organic matter. Add sphagnum peat, compost leaves or rotted manure if necessary. If the soil has a clay texture, adding some sand may help.
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