· several primrose species have been highly cultivated for their showy flowers , with hybrid species and cultivars making up the bulk of plants found in garden centers and nurseries. Also known as the english primrose , this type of primula is one of the most popular. Although primrose isnt considered to be invasive, some types will self-sow and spread unless the blooms are deadheaded before they go to seed. It features clusters of pale yellow, white, or pink flowers with a dark yellow center and grows up to 4-6 inches (10-15 cm) tall. The cowslip primula , primula veris, is a small perennial flower with fleshy leaves and slender stalks of yellow or orange flowers. · cowslip primula charms with fragrant, nodding yellow-orange blooms, bringing joy to spring gardens. They are popular as potted plants, for rock gardens, or grown along shady garden borders! It blooms from late winter to mid-spring. My mom always buys this kind of plants ( primrose ) and plant them in the garden after all snow gone but they never come back next year, do you know are they not cold hardy or i do something wrong? If you don’t want your plants to spread, consider growing a sterile variety that won’t go to seed. · primroses ( primula spp. ) are unusually vivid spring blooming perennial flowers, ideal for brightening the garden. Heres how to grow your own. Primula vulgaris, commonly called primrose , is a semi-evergreen, rosette-forming perennial that is native from southern europe to western asia.