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Mountain Sandwort

Denomination: 'AMOZ0001'
Trade name: Summer White
Botanical Name: Arenaria montana
Applicant/Holder: Syngenta Participations AG
Rosentalstrasse 67
P.O. Box CH-4058
Breeder: H. Stemkens, Hoorn, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2011-10-04
Application Number: 11-7374
Grant of Rights Date: 2017-08-29
Certificate Number: 5545
Date rights surrendered: 2018-05-31

Variety Description

Variety used for comparison: Arenaria montana

Summary: The plants of 'AMOZ0001' flower for a longer period of time, almost continuously, than those of Arenaria montana which flower once. In order to flower, the plants of 'AMOZ0001' do not require a vernalization period while those of Arenaria montana do. The peduncle of 'AMOZ0001' is shorter than that of Arenaria montana.


PLANT: bushy rounded growth habit, medium to dense branching
STEM: red-brown, very strong intensity of anthocyanin colouration, dense pubescence, small diameter

LEAF: simple type
LEAF BLADE: linear and elliptic, acute apex, cuneate base, entire margin, medium density pubescence on upper side, sparse to medium density pubescence on lower side, medium green on upper side, light to medium green on lower side

FLOWERING: long length of time, almost continuous
SEPAL: narrow elliptic, acute to acuminate apex, entire margin
FLOWER: single type, petals non-touching
PETAL: white (RHS NN155C-D) on inner side, obovate, rounded wavy apex, weak recurvature of tip

Origin & Breeding History: 'AMOZ0001' originated from a controlled cross conducted by the breeder Har Stemkens, an employee of Syngenta in Enkhuizen, the Netherlands, in April 2007, as part of a controlled breeding program. The cross was conducted between the female parent 'K1243-1' and an unknown male parent, both proprietary seedlings. In September 2007, the resultant seed was sown in a greenhouse from which a single plant was selected in March 2008 based on its plant growth habit, flower colour and production characteristics.

Tests & Trials: The comparative trial for 'AMOZ0001' was conducted in a polyhouse during the winter of 2015 and the spring of 2016 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of 10 plants each of the candidate and reference variety. All plants were grown from rooted cuttings and transplanted into 15 cm pots in May 2015. Observations and measurements showing early flowering of the candidate variety were taken from 10 plants, or parts of plants, on December 9, 2015 and all other observations and measurements were taken on April 26, 2016. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison table for 'AMOZ0001' with reference variety Arenaria montana

Peduncle length (cm)

  'AMOZ0001' Arenaria montana
mean 1.4 2.6
std. deviation 0.16 0.66

Click on image for larger view
Mountain Sandwort: 'AMOZ0001' (left) with reference variety Arenaria montana (right)

Click on image for larger view
Mountain Sandwort: 'AMOZ0001' (left) with reference variety Arenaria montana (right)

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