Leucanthemella serotina (Giant Daisy)

Plant Info
Also known as:
Genus:Leucanthemella
Family:Asteraceae (Aster)
Life cycle:perennial
Origin:Europe, Asia
Status:
  • Weedy
Habitat:part shade, sun; disturbed soil; roadsides, ditches, old fields
Bloom season:September - October
Plant height:3 to 6 feet
Wetland Indicator Status:none
MN county distribution (click map to enlarge):Minnesota county distribution map
National distribution (click map to enlarge):National distribution map

Pick an image for a larger view. See the glossary for icon descriptions.

Detailed Information

Flower: Flower shape: 7+petals Cluster type: panicle

[photo of flowers] Loose cluster of stalked flowers at the top of the plant and branches from the upper leaf axils. Flowers are 2 to 3 inches across with white petals (ray flowers) and a golden yellow to greenish yellow center disk. Flowers typically turn to face the sun.

[photo of  bracts] The bracts surrounding the base of the flower are in 2 or 3 layers, green with broad, membranous, dark brown edging, and the outer bracts longer than the inner. Flower stalks are covered in short, fine hairs.

Leaves and stems: Leaf attachment: alternate Leaf type: simple

[photo of leaves] Leaves are 2 to 5 inches long, up to 1 inch wide, lance-elliptic to oblong, coarsely toothed and stalkless. The lowest leaves may wither away by flowering time. Stems are stout, multiple from the base, mostly erect, and unbranched except in the flowers.

Fruit: Fruit type: seed without plume

The center disk becomes a head of dry seeds that lack a tuft of hairs.

Notes:

Giant Daisy is a garden escapee that is not widespread in Minnesota, possibly for hardiness reasons, but that may change as Minnesota becomes more zone 4 and 5 and less zone 3. It is a much taller plant with more and larger flowers than the more common Ox-eye Daisy (Leucanthemum vulgare).

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More photos

Photos by K. Chayka taken in Lake and St. Louis counties. Photos courtesy Peter M. Dziuk taken in Aitkin, Lake and St. Louis counties.

Comments

Have you seen this plant in Minnesota, or have any other comments about it?

Posted by: Donna - St Louis County
on: 2016-09-19 05:09:54

Saw a huge patch of this growing just south of Eveleth. 2 yrs ago I saw it growing in the same spot as this year, but it was not there last year!

Posted by: Maryclare - Apple Valley
on: 2017-09-25 11:45:54

I have seen it years ago along the North Shore of Lake Superior in roadside gardens. But never saw in the trade. Let's get this plant into our Garden centers! Lovely combined with the Michaelmas daisies and New England asters.i didn't know it was listed as a MN wildflower but there it is on the map.

Posted by: K. Chayka
on: 2017-09-25 15:04:19

Maryclare, you misunderstand. A species with the designation "wildflower" only means it's been found uncultivated in a natural area, and the map merely indicates where it's been previously spotted. That doesn't mean it should be there. Giant daisy is a garden escapee and a potentially invasive non-native weed. We do not want this in any more of our natural landscapes, especially on the north shore, where invasive weeds already run amok! If this species is not widespread in the garden trade as you say, then I for one am relieved. We thank you in advance for not encouraging others to plant more potentially invasive species!

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