(TB) 'Equinox'
1931, Auten 'Equinox' (Edward Auten Jr., 1927) TB, 26". Late midseason bloom and rebloom. Color Class R3M. S. reddish purple; F. slight darker. Kathleen X unknown. Auten Peonies 1931 From the 2022 Rebloom Checklist: Rebloom reported in: IL, MO. USDA Zones See below:
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References:
| From the introductor Auten Peony catalog, 1931: FALL BLOOMING, bloom spring and usually also in fall. AUTUMN KING, blue purple, best of the four; EQUINOX, blue purple; SEPTEMBER MORN, mauve; DIOGENES, blue purple. All 75 cents each. |
| From the Auten Peony catalog, 1932: FALL BLOOMING IRIS. Equinox, September Morn, Diogenes. All chance seedlings of Kathleen (pallida type). Small blooms, of value only for breeding, to get new source of fall blooming tendency. Equinox is with me more certain than Autumn King. One of each, 3 roots $1.25 |
| From the Schreiner's Iris Lover's catalog, 1935: Equinox, a tall type striated reddish purple and also most consistent fall bloomer. $1.00 |
| From the Quality Gardens catalog, 1933: EQUINOX (Auten '32) 26" Perhaps the most dependable fall bloomer. A red purple bicolor, of very good texture. A late spring bloomer. $2.50 |
| From the Fairmount Iris Gardens catalog, 1934: EQUINOX (Auten 1932) One of the most dependable fall blooming irises. S. reddish purple; F. slight darker. 26 in. $2.50 |
Culture
Quick Summary of Cultural Directions
FURTHER CULTURAL INFORMATION  |
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| 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.) |
| Exposure Prefers full sun for optimal performance, may still bloom in half-day shade |
| Water: Prefers well drained good garden soil, Tolerant of dry conditions in established plants, Intolerant of swampy conditions. |
| PH Prefers Neutral to basic solis 6.1 to 8.5, quite toleranr of more extreme conditions |
| Fertilizer Prefers rich conditions on relatively inorganic soils. |
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Topic revision: r5 - 23 Jun 2026, CarlosA
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