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Mainly known for the garden cultivars known as Dutch Iris, Spanish Iris and English Iris. They generally flower between early to mid-summer and each stem produces between 1 - 3 flowers. Most bulbs should be planted in late autumn, 10 cm deep and between 5–10 cm apart. [3] Section Xiphium. Iris boissieri Henriq; Iris filifolia Boiss. Iris ...
Iris xiphium, commonly known as the Spanish iris, is an iris native to Spain and Portugal. It has also been found in Corsica, South West France, southern Italy, Algeria and Tunisia. [2] This species is also known as the small bulbous-rooted iris or xiphium iris. It was first illustrated in 'Flowers of the Mediterranean' in 1965. [2]
Iris × hollandica, commonly known as the Dutch iris, is a hybrid iris developed from species native to Portugal, Spain and North Africa [1] (Iris tingitana × Iris xiphium). [ 2 ] Two varieties of Iris xiphium (var. praecox ) from Spain and (var. lusitanica ) from Portugal, were crossed with Iris tingitana (from North Africa).
Iris albicans – white cemetery iris, white flag iris; Iris alexeenkoi Grossh. Iris aphylla L. – stool iris, table iris, leafless iris (including I. nudicaulis) Iris aphylla subsp. hungarica (Waldst. & Kit.) Helgi ; Iris attica (Boiss. & Heldr.) Hayek; Iris benacensis A.Kern. ex Stapf; Iris bicapitata Colas; Iris croatica – Perunika I ...
In 1788, Curtis's Botanical Magazine, table 61, described Iris orientalis using the name Iris ochroleuca. [12] This was the start of the confusion between the two irises. [3] [7] [20] Because Iris ochroleuce was published later (by Carl Linnaeus in 1771 [14]), it is deemed unacceptable under the International Rules of Nomenclature. [10]
It is hardy to USDA Zone 2, [7] or Zone 3. [5] Iris ruthenica does not flower very well in the UK. [13] It is best cultivated in fertile soils that do not dry out. [12] [15] It is best suited for Rock Gardens or at the front of a flower border. [12] [13] [14] Although sinks or troughs could be used. [13] It also grows well on dry peat banks. [33]
It also unlike other species, it has (4 cm long) upright standards. [5] They have a similar look to Dutch Iris flowers. [3] The stem is between 20–30 cm tall. [6] It has also generally 6 shiny, grey-green leaves (that have a thin white margin) that are 1.5 cm wide and grow up to 30 cm long at flowering time. [2] They grow along the stem of ...
[7] The iris seed is not hard to raise, but does take many years to germinate and then they take 3–5 years before reaching flowering stage. [26] It is estimated to be hardy to between USDA Zones 7 to 11. But could be hardy to Zone 5 or 6 with winter protection. [10] It has a similar hardiness to Iris fulva. [14]
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