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Bright
and cheerful, the annual ursinias are some of the easiest plants
to grow for spring colour. As a mass spring display, the Skilpad
Reserve near Kamieskroon in Namaqualand, must be one of the best
in the world. Fields of orange Ursinia cakilefolia cover
the ground as far as the eye can see, with waves of flowers moving
in the wind and blue, rocky hills floating like islands in an orange
sea. This ursinia is easily recognised by the glossy black centre
of its daisy flowers, which gives it its beautiful Afrikaans name,
glansoogbergmagriet, that literally means glossy-eyed-mountain-daisy.
In the wild Ursinia cakilefolia is found on the sandy flats
and slopes in Namaqualand and the western Karoo and down the west
coast as far as Redelinghuys in the Western Cape. The annual ursinias
germinate with the autumn rains, grow during the cool wet winter,
flower in spring and set seed before the long dry summer.
The
plants are single-stemmed but bushy, branching at the base and reaching
a height of about 45 cm. The leaves are bright green and finely
divided, almost like carrot leaves. They feel smooth, soft and slightly
succulent, and when crushed smell sweet and fresh. The green stems
often turn an attractive dark beetroot red colour. At the tip of
each stem is a single daisy. While in bud the long slender stems
droop downwards and only straighten as the flowers open. An open
flower measures about 5 cm across. The petals of the flowers are
bright orange or yellow. The glossy black centre so typical of Ursinia
cakilefolia is formed by shiny scales that cover the inner florets.
The number of flowers per plant varies from 15 to 20, and depending
on how warm it is, each open flower lasts for a number of days before
turning into white balls as the seeds form. In the evening the petals
fold together closing the flowers for the night. Picked flowers
will open indoors and last cheerfully for a number of days in a
vase. Bees are the main pollinators, visiting the flowers for their
small amounts of nectar. The seeds look like miniature white paper
flowers, and are light in weight, ready to float away on the breeze
as they dry, and give the plant its English common name, parachute
daisy.

Growing Ursinia cakilefolia
At Kirstenbosch we plant large beds of both orange and yellow Ursinia
cakilefolia for the spring display. In autumn (March) the seed
is sown in seedbeds or trays in the nursery. The soil we use is
sandy, well drained and weed free, and is dug over and leveled before
sowing. The light seeds are sown as evenly as possible on a windless
day, gently watered and then covered with a thin layer of clean
sand. The beds are watered regularly to keep the soil moist. Germination
is usually very good and occurs within 3 - 7 days. The seed can
also be sown directly into the garden beds, but germination is often
irregular and competition from faster growing weeds a problem. The
seedlings are pricked out from the nursery directly into the garden
as soon as they are large enough to comfortably handle. The ursinias
must be planted in full sun and in well-drained, composted soil.
For the most effective displays they must be planted close to each
other and in flowerbeds that face north as the flower heads turn
to follow the sun. The ursinias mix beautifully with other annuals
like Arctotis acaulis (gousblom), Dimorphotheca sinuata
and D. pluvialis (Namaqualand daisies) and bright blue Heliophila
coronopifolia (blue flax). Ursinia cakilefolia should
be frost hardy to zone 9 (-7oC / 20oF), but in very cold climates
that experience frost, is best sown in early spring under glass,
or outdoors after the last frost.
There
are 38 species of Ursinia, or parachute daisies as they are
commonly known, found in southern Africa and 1 species in North
Africa. Not all of them are annuals, many are herbaceous perennials
or shubshrubs. Typical features of all the ursinias are the single
flowers on stems that nod in bud, the several rows of bracts with
rounded papery tips that surround the base of the flowerhead and
the seed or fruit that is topped with prominent, white, spreading
petal-like scales. Other annual species grown in Kirstenbosch for
spring display are Ursinia anthemoides (common parachute
daisy or ringmagriet), Ursinia calenduliflora (bergmagriet)
and Ursinia speciosa (Namakwa-ursinia).
Author: Liesl van der Walt
Kirstenbosch NBG
October 2001
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