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■(TB) 'Thorbecke'

Before 1897, Veitch

'Thorbecke' (James Veitch and Sons, before 1897) TB. Midseason bloom. Color Class W3. Purple leaf base. Diploïd. Synonym: Forbach, Mr. Gladstone, Victory.

See below:

Thorbecke TB 1919.jpgThorbecke1.jpg
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References:

From Wing Seed catalog, 1919: THORBECKE — (Am.) One of the most beautiful. Fine white standards, deep, rich velvety purple falls with paler margin and veined on white at base. Large flower. Two feet. 25c.
From Longfield Iris Farm catalog: THORBECKE: (Introduced about 1897). A clear sharp contrast of white standards and deep velvety purple falls. The flowers are carried on slender thirty-inch stems. In our opinion, a fine Iris and greatly underrated.
 


Culture

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.
FURTHER CULTURAL INFORMATION Here


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Interested in Tall Bearded Iris? Please visit the: Tall Bearded Iris Society website.

To Report errors do not use comment box but contact the Iris Encyclopedia Photo Manager or Iris Encyclopedia Manager Comment box is reserved for added information about the topic.

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.


 

-- Main.RPries - 2011-03-07
I Attachment Action Size Date Who Comment
Thorbecke TB 1919.jpgjpg Thorbecke TB 1919.jpg manage 114 K 06 Feb 2024 - 23:35 EdenSprings Illustration from (American) Country Life magazine; June 1919
Thorbecke1.jpgjpg Thorbecke1.jpg manage 393 K 23 Oct 2023 - 11:40 BrewItt Glass slide #9306 from J. Horace McFarland Company, Harrisburg, PA
Topic revision: r11 - 06 Feb 2024, EdenSprings
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