These are grown from seeds from the Barnhaven Primroses in France from hybrids that are bred to retain the shape and habit of wild primroses but with more vigor and hardiness. These lightly fragrant blooms appear between February and April, with many blossoms atop single stems, ideal for picking. This particular variety comes in shades of amber, apricot, and pale yellow with red stems and calyxes and interesting bronzed foliage.
Primula acaulis is a hardy primrose and tolerant of a wide range of conditions, but they generally prefer full sun/part shade and humus-rich, well-drained soil and should never be allowed to dry out. Barnhaven recommends planting them on a slope under deciduous trees or in a north-east facing bed. If you live in an area with alternating freeze and thaw conditions, waterlogging in winter, or hot dry conditions in summer, Barnhaven recommends a loose covering of leaves or straw. To retain vigor, it is advisable to divide the plants every two or three years. Barnhaven recommends feeding the plants with a weak solution of high potash or tomato fertilizer (do not use a high nitrogen fertilizer) every 10 days from the time the buds begin to form until the flowers open. A final feed at the end flowering is recommended but not late in the season. (Illustration by Janus (Jan) Kops [Public domain or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons}
And who doesn't love primroses? Primula halleri, native to the alpine meadows and mountains of Europe to the Caucasus, this one belongs to the Farinosae group of primroses because the leaves are covered in a white powder (farina) that give them a frosty appearance. The blooms form in clusters atop 9-12 inch stems and are varying shades of violet pink,. each with a yellow eye. Grow in sun to partial shade and consistently moist soil in Zones 5-9. (Photo by Ghislain118 (AD) http://www.fleurs-des-montagnes.net (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons)
Care: Primroses like neutral or slightly acid, well-drained soil, and partial shade.
They like a partially shaded position and large quantities of organic matter. Barnhaven recommends a slope under deciduous trees or northeast facing bed, dividing every two to three years, and feeding with a weak solution high in potash or a tomato fertilizer every 10 days from the time the buds start to form until the first flowers open. Avoid full sun, dry conditions, and a covering of leaves in winter will
help protect the plants during freeze and thaw conditions.