Mammoth™ ‘Yellow Quill’ Garden Chrysanthemum

Abstract

Additional index words. Asteraceae, chrysanthemum breeding, Dendranthema, winterhardiness, herbaceous perennials Mammothä 'Yellow Quill' (U.S. Plant Patent 15,027; Canadian Plant Breeders' Rights Certificate No. 2951) is a new interspecific garden chrysanthemum cultivar, Chrysanthemum •hybridum Anderson (=Dendranthema •hybrida Anderson) with common names of hardy mum, chrysanthemum, and garden mum. It is a new and distinct form of shrubtype garden mum in the Mammothä series with spoon-shaped ray florets, frost-tolerant flower petals, self-pinching growth, and

Chrysanthemum ×grandiflorum MN Sel’n. 90-275-27 Groundcover Garden Chrysanthemum

“…90-275-27 in northern latitudes occurs with snow cover similar to other winter-hardy garden chrysanthemums (Anderson et al, 2012a(Anderson et al, , 2014(Anderson et al, , 2015. Without snow cover, soil surface mulch can substitute (Anderson et al, 2012b) 100% (2000, 2001, 2003, 2004, and 20072001 and2008, Morris, MN;2002 and2008, Waseca, MN) with an overall grand arithmetic mean of 69% for the tested years and locations (Table 3). The range of annual arithmetic means was 53% in 2000 to 93% in 2007 (Table 3).…”

“…Geometric means for winterhardiness in garden chrysanthemums were first employed by Anderson et al (2012b) as a more accurate gauge than arithmetic means so that no data dominate the mean (Ouellet, 1976). Geometric means (G) for winter survival at l (locations) in y (years) formula are calculated as:…”

Chrysanthemum ×hybridum Mammoth™ ‘Dark Bronze Daisy’ Garden Chrysanthemum

“…2). In Year 2 and onwards, as is characteristic of the Mammothä series (Anderson et al, , 2012a(Anderson et al, , 2012b, Mammothä 'Dark Bronze Daisy' also produces a shrub habit, growing to 76-106 · 83-152 cm (height · width; Mammothä 'Dark Bronze Daisy' is 1 week earlier in flowering (6-week short day response group) than 'Dark Grenadine' (7-week short day response group) under short day conditions (Table 1). Flowering for Mammothä 'Dark Bronze Daisy' starts in about week 34.…”

“…2). This latter trait distinguishes them from classic, smaller cushion forms resembling the Mammothä series in Year 1 plants (Anderson et al, , 2012a(Anderson et al, , 2012b. Seedling MN Sel'n.…”

“…Plant Patent 19,043) possesses a new flower color for this series of winter-hardy garden chrysanthemums (Anderson and Asher, 2008). The Mammothä series now has a flower color palette including dark bronze, red, white, yellow, coral, lavender, twilight pink, and dark pink cultivars Anderson et al, , 2012aAnderson et al, , 2012bAnderson et al, , 2014aAnderson et al, , 2014b. The pedigree of Mammothä 'Dark Bronze Daisy' (Fig.…”