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■(TB) 'Bertwistle'

1990, Innerst

'Bertwistle' (Sterling Innerst, R. 1990). Seedling# 2187-13. TB, 36" (91 cm). Late midseason bloom. Standards white; Falls white, 1/2" medium yellow edge; beards white; slight spicy fragrance. 'Eastertime' X 'Beverly Sills'. Innerst 1990. Honorable Mention 1992; Award of Merit 1996.

See below:
bert01.jpgBertwhistle6.jpgBertwhistle7.JPGbertwhistle 66.jpgbertwistle01.jpgBertwistle05.jpgBertwistle06.jpgBertwistle1.jpgBertwistle2VR.jpgBertwistle 10.jpgBertwistleEI.jpgBertwistleVR.jpg


From AIS Bulletin #277 April 1990 Introducing BERTWISTLE-Sdlg. 2187-1.3. TB36" M-L. White with falls trimmed midyellow. Three branches, 7 buds, fertile both ways. Eastertime X Beverly Sills. $25.00. Sterling Innerst.


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.


-- BetsyHiggins - 2010-10-05
I Attachment Action Size Date Who Comment
Bertwhistle6.jpgjpg Bertwhistle6.jpg manage 78 K 19 Mar 2014 - 02:41 Main.TLaurin Photo by Blue J Iris
Bertwhistle7.JPGJPG Bertwhistle7.JPG manage 71 K 19 Mar 2014 - 02:42 Main.TLaurin Photo by Blue J Iris
Bertwistle05.jpgjpg Bertwistle05.jpg manage 143 K 09 Jul 2017 - 02:43 Main.TLaurin Photo by Alla Chernoguz-Ukraine
Bertwistle06.jpgjpg Bertwistle06.jpg manage 50 K 19 Apr 2014 - 13:51 Main.TLaurin Photo by Igor Khorosh,Ukraine
Bertwistle1.jpgjpg Bertwistle1.jpg manage 26 K 26 Apr 2016 - 12:34 Main.TLaurin Photo by South Jersey Iris
Bertwistle2VR.jpgjpg Bertwistle2VR.jpg manage 35 K 29 Apr 2013 - 14:30 Main.Betsy881 Photo by Viacheslav Rudniew Ukr
BertwistleEI.jpgjpg BertwistleEI.jpg manage 20 K 08 Dec 2012 - 20:39 Main.Betsy881 Photo by Exline Iris Garden
BertwistleVR.jpgjpg BertwistleVR.jpg manage 29 K 29 Apr 2013 - 14:30 Main.Betsy881 Photo by Viacheslav Rudniew Ukr
Bertwistle_10.jpgjpg Bertwistle_10.jpg manage 24 K 23 Mar 2012 - 22:51 Bertwistle
bert01.jpgjpg bert01.jpg manage 83 K 13 May 2015 - 03:03 Main.TLaurin Photo by Exline Iris Garden
bertwhistle_66.jpgjpg bertwhistle_66.jpg manage 56 K 24 Nov 2010 - 23:43 Main.Elladan photo by Elladan
bertwistle01.jpgjpg bertwistle01.jpg manage 176 K 16 Mar 2017 - 13:57 Main.TLaurin Photo by Judy Tapio-Jubilee Gardens
Topic revision: r22 - 05 Jan 2022, Harloiris
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