■(TB) 'Crystal Blue'
1964, Schreiner
'Crystal Blue' (
Schreiner, R. 1964). Seedling# S-573-C. TB, 37" (94 cm), Late bloom. Frosty glacial blue self; deeper in borders.
'Galilee' X (((
'Pierre Menard' x (
'Blue Rhythm' x
'Chivalry')) x
'Harbor Blue'). Schreiners 1964. Honorable Mention 1965.
See below:
References:
From Schreiner’s catalog, 1964: CRYSTAL BLUE (Schreiner 1964) ML. 37". This clear, frosty, glacial blue is a seedling of the famous Galilee crossed with one of our own blue lines. We are trying year after year to achieve a definite progression toward greater blueness and this is our bid for 1964. Crystal Blue features fine form. It is of medium height and rather late flowering. We feel that it is a definite advance from the popular Galilee. A choice iris that will be your pride and joy. Very broad petaled rich blue-for those who love blue, and we do, this is a most satisfying iris. No.R573-C. $25.00 |
CRYSTAL BLUE (Schreiner '64) is another vigorous iris which produced six increases for us the first year. It is the deepest pure blue that we've seen. The flowers are huge and somewhat tailored. [Joseph Ghio, “The 1965 Iris Season in Review,” Bulletin of the American Iris Society, No. 179 (October 1965): 80.] |
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CRYSTAL BLUE (Schreiner '64). This selection maintains merit in a crowded grouping due to three important traits-frosty, crystalline color, impeccable, flaring form, and late season of bloom. A direct descendent of 'Galilee', this blue further rewards one with a husky stem and plant. A variety not receiving proper plaudits and easily the finest late bloomer in medium blue. Primary fault-cannot seem to reach prescribed height consistently. [Roger R. Nelson, “Your More Music Survey,” The Bulletin of the American Iris Society, No. 197 (April 1970): 8.] |
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Culture
Quick Summary of Cultural Directions
FURTHER CULTURAL INFORMATION |
Exposure Prefers full sun for optimal performance, may still bloom in half-day shade |
Fertilizer Prefers rich conditions on relatively inorganic soils. |
Hardiness Zones 4-8 for most varieties, Some cultivars tolerate colder, others tolerate warmer zones (please comment in comment box with your location if this cultivar grows well in zone 3, 4, 9, or 10.) |
PH Prefers Neutral to basic solis 6.1 to 8.5, quite toleranr of more extreme conditions |
Water: Prefers well drained good garden soil, Tolerant of dry conditions in established plants, Intolerant of swampy conditions. |
BobPries - 21 Apr 2019
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Your Observations Are Valued. Please make note of bud count, branching, purple based foliage and bloom time, etc. Because these are affected by climate, note date, year and geographic location and write these and other comments in the comment box below.
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KentPfeiffer - 2010-07-07
- TB 'Crystal Blue' was blooming at the Minnesota Landscape Arboretum, zone 4b, approximately June 3-12. I didn't notice any Purple Based Foliage at the base of the leaves, but there was purple coloring on the spathes. -- HollyJohnson2017 -04-01 - 15 Aug 2017