See Show Calender


■(TB) 'Catalyst'

1980, Keppel

'Catalyst' (Keith Keppel, R. 1979). Seedling# 75-83A. TB, 35" (89 cm), Midseason bloom. Standards sunflower (M&P 9-L-4) touched with golden glow (9-L-6) at base; falls darker, velvety yellow; yellow-orange beard. 'Generosity' X seedling# 72-5B: (((('Frances Kent' x 'Mary Randall') x (seedling# 60-183-Q: Sexton seedling# 60 x 'Golden Gene')) x ('Denver Mint' x seedling# 60-183-0)) x ('Radiant Light' x ((('Golden Gleam' x 'Hallmark') x (Sexton seedling# 60: 'Gail' x 'Techny Chimes')) x seedling# 60-183A))). Keppel 1980. Honorable Mention 1982; Award of Merit 1984.

See below:
Catalyst.jpgcatalyst01.jpgCatalyst01.jpgcatalyst08.jpgcatalyst09.jpgcatalyst4.jpgCatalyst5.jpgCatalyst50.jpgCatalyst6.jpgCatalyst Keppel 80.JPGCatalystBJ.jpg


From AIS Bulletin #236 January 1980 Introducing CATALYST (Keppel) M 35". Clear, bright sunflower yellow-not gold-with falls a bit darker and with a velvet finish. Beards yellow-orange. Generosity X orange seelding inv.Frances Kent, Mary Randall, Gail, Techny Chimes, Golden Gene, Denver Mint, Radiant Light, Golden Gleam, Hallmark. #75-83A. $25.00. Keith Keppel.
Some want to classify CATALYST (Keppel '80) as intense yellow rather than gold, but this one seems every bit as gold as the others. Regardless, CATALYST seems to have everything an iris should have, with ruffled flowers on widely branched tall, multi-budded stalks. (Kenneth Mohr, 1983. AIS Bulletin, July 1983, p. 35).


Quick Summary of Cultural Directions

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.

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.


-- MichaelGreenfield - 2009-12-30
I Attachment Action Size Date Who Comment
Catalyst.jpgjpg Catalyst.jpg manage 48 K 30 Dec 2009 - 03:12 MichaelGreenfield Photo by Mike Greenfield
Catalyst01.jpgjpg Catalyst01.jpg manage 131 K 14 Sep 2017 - 18:33 UnknownUser Photo by Amazing Iris Garden-Katikati-New Zealand
Catalyst5.jpgjpg Catalyst5.jpg manage 37 K 28 Nov 2013 - 14:40 UnknownUser Photo by South Jersey Iris
Catalyst50.jpgjpg Catalyst50.jpg manage 38 K 19 Apr 2022 - 12:43 UnknownUser Photo by South Jersey Iris
Catalyst6.jpgjpg Catalyst6.jpg manage 75 K 21 Mar 2014 - 02:30 UnknownUser Photo by Blue J Iris
CatalystBJ.jpgjpg CatalystBJ.jpg manage 75 K 02 Feb 2012 - 22:59 Main.Betsy881 Photo by Blue J Iris
Catalyst_Keppel_80.JPGJPG Catalyst_Keppel_80.JPG manage 62 K 04 Jan 2010 - 11:32 Main.Laymont+ by Dejoux in my garden : sud-ouest France
catalyst01.jpgjpg catalyst01.jpg manage 46 K 20 Aug 2015 - 20:02 UnknownUser Photo by Amazing Iris Garden-New Zealand
catalyst08.jpgjpg catalyst08.jpg manage 144 K 28 Aug 2020 - 00:22 UnknownUser Photo by Christine Cosi-Iris en Perigord- France
catalyst09.jpgjpg catalyst09.jpg manage 186 K 19 Apr 2020 - 02:37 UnknownUser Photo by Christine Cosi-Iris en Perigord- France
catalyst4.jpgjpg catalyst4.jpg manage 62 K 07 Nov 2013 - 20:30 UnknownUser Photo by Alain Chapelle-France
Topic revision: r28 - 03 May 2024, BrewItt
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