{"product_id":"centaurea-montana-9cm-potted","title":"Centaurea montana","description":"\u003cp\u003eCentaurea montana, the perennial cornflower or mountain knapweed, bears large, lacy blue flowers with reddish-purple centres from late spring into summer, above grey-green leaves that are hairy beneath. It is an easy, spreading perennial for cottage gardens, wildlife plantings, borders and coastal gardens, and the flowers are good for cutting. Its spidery blooms are popular with bees and butterflies.\u003c\/p\u003e\n\u003cp\u003eGrow in full sun or partial shade in any moist but well-drained soil, including clay and chalk; it is fully hardy. Deadhead regularly to prolong flowering, and cut back hard after the first flush for fresh leaves and often a second display. Stake in rich soil, where stems can flop. It spreads by rhizomes, so divide every few years in spring or autumn. Powdery mildew can occur late in summer.\u003c\/p\u003e","brand":"Lincspplants","offers":[{"title":"9cm Potted","offer_id":54539314692443,"sku":"CENTA-MON-9CMPOT","price":8.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/1590\/9979\/files\/shutterstock_610388204.jpg?v=1758714114","url":"https:\/\/www.lincsplants.com\/products\/centaurea-montana-9cm-potted","provider":"Lincspplants","version":"1.0","type":"link"}