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Iris confusa is similar in form to Iris japonica and Iris wattii. Iris confusa is larger than Iris japonica in all parts, [3] with more attractive foliage. [4] Compared to Iris wattii, it is smaller and has smaller flowers. [5] [6] I. confusa has stout, creeping rhizomes. [7] [8] They are short and bamboo-like. [9] [10] It also has short ...
Its flowers are usually of a dull, leaden-blue colour, or dull buff-yellow tinged with blue. The petals have delicate veining. It blooms between June and July, but the flowers only last a day or so. [3] The green seed capsules, which remain attached to the plant throughout the winter, are 5–8 cm (2–3 in) long; and the seeds are scarlet.
Iris illyrica grows up to 40 cm in height. Its flowering period is May and June. Its best planting position is in full sun. The soil requirements are dry or average moist, fertile well drained soil. It is suitable in border and rock gardens. This plant produces seeds rarely. It produces usually ten seeds that ripen out in autumn.
The flowers are bright yellow, 7–10 cm (2.8–3.9 in) across, with the typical iris form. The fruit is a dry capsule 4–7 cm (1.6–2.8 in) long, containing numerous pale brown seeds. I. pseudacorus grows best in very wet conditions, and is common in wetlands, where it tolerates submersion, low pH , and anoxic soils.
The iris seed is not hard to raise but a very slow process. [33] It can take many months to germinate (between 3–12 months) with a 50% germination average. [14] They then can take 3–5 years before reaching flowering stage. [33] Seeds should be harvested from the plant after flowering but they must be from mature seed pods.
Iris brevicaulis is the smallest in all the Hexagonae series of Louisiana irises. [3] Its leaves and stalks are much shorter than the other species. [4] It is similar in form to Iris virginica, [5] The flowers are normally never seen above the foliage, [6] [4] [7] due to the short zig-zagging flower stems and occasionally, due to the habit of the stems to lie along the floor, [8] or it is ...
Iris virginica is a perennial plant that grows up to 0.6–0.9 m (2–3 ft) tall. The plant's sword-shaped basal leaves are erect or sometimes arching and measure up to 91 cm (3 ft) long and 2.5 cm (1 in) across at the base.
Iris koreana is similar in form to (the larger) Iris minutoaurea and Iris odaesanensis, (both are also from the Iris chinensis series). [2] William Rickatson Dykes thought that Iris koreana was a larger form of Iris minutoaurea, [3] but Iris koreana is more robust than Iris minutoaurea. [4] [5] It is also similar to the American woodland native ...