{"id":2638,"date":"2020-01-18T00:02:46","date_gmt":"2020-01-18T08:02:46","guid":{"rendered":"https:\/\/depts.washington.edu\/hortlib\/pal\/pal-question-431\/"},"modified":"2024-04-20T11:46:38","modified_gmt":"2024-04-20T18:46:38","slug":"plant-division-and-propagation","status":"publish","type":"pal","link":"https:\/\/depts.washington.edu\/hortlib\/pal\/plant-division-and-propagation\/","title":{"rendered":"Plant division and propagation"},"content":{"rendered":"

I am wondering if the following plants can be divided or propagated successfully: Heuchera, Donkey Tail Spurge (Euphorbia), Corsican Hellebore, and Helianthemum.<\/strong><\/p>\n

I consulted The American Horticultural Society Plant Propagation book,
\nedited by Alan Toogood (DK Publishing, 1999), and it says the following:<\/p>\n

    \n
  1. Heuchera<\/em>: by division or by seed in spring. Since cultivars may not
    \ncome true from seed, I would recommend dividing your plants. Once spring
    \ngrowth has begun, lift the plant from the ground and remove small
    \nsections from around the edge (look for good roots, and 2-3 shoots).<\/li>\n
  2. Euphorbia myrsinites<\/em>: (Just a note: based on the USDA information<\/a> that
    \nthis plant is invasive in Oregon and banned in     Colorado,<\/a> I would think twice before propagating it. This species does a fine job of propagating itself, apparently. In general, the genus Euphorbia can be propagated by division in early
    \nspring, or from spring to summer, by seeds in fall or spring, and by cuttings in summer or fall, but if you were to propagate by cuttings, you would need to protect your skin from the sap.<\/li>\n
  3. Helleborus argutifolius<\/em> can be propagated by division after flowering,
    \nor by seeds in summer. Test seed capsules for readiness by gently
    \nsqueezing. If the seed capsule splits to reveal dark seeds, it is ready
    \nfor harvest. Wear gloves! H. argutifolius<\/em> (Corsican hellebore) often
    \nself-seeds. Check around the base of the plant in spring. When each
    \nseedling has at least one true leaf, gently lift and transplant to moist,
    \nfertile soil in light shade.<\/li>\n
  4. Helianthemum<\/em> can be started from greenwood cuttings rooted in summer
    \nand fall, and by seeds sown in spring in a frost-free location.<\/li>\n<\/ol>\n

    If you would like further information on the relative ease or difficulty
    \nof each of these methods for each of these plants, I recommend coming to
    \nthe Miller Library and looking at our books and other resources on
    \npropagation.     Here is a link to a booklist.<\/a><\/p>\n

    Euphorbia<\/a>, <\/span>Helianthemum<\/a>, <\/span>Helleborus<\/a>, <\/span>Heuchera<\/a>, <\/span>Invasive plants<\/a>, <\/span>Propagation<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

    I am wondering if the following plants can be divided or propagated successfully: Heuchera, Donkey Tail Spurge (Euphorbia), Corsican Hellebore, and Helianthemum. I consulted The American Horticultural Society Plant Propagation book, edited by Alan Toogood (DK Publishing, 1999), and it says the following: Heuchera: by division or by seed in spring. Since cultivars may not come true from seed, I would recommend dividing your plants. Once spring growth has begun, lift the plant from the ground and remove small sections…<\/p>\n

    Continue reading Plant division and propagation<\/span><\/a><\/div>\n","protected":false},"author":4,"featured_media":0,"menu_order":0,"template":"","keyword":[107,601,453,600,44,96],"class_list":["post-2638","pal","type-pal","status-publish","hentry","keyword-euphorbia","keyword-helianthemum","keyword-helleborus","keyword-heuchera","keyword-invasive-plants","keyword-propagation"],"acf":[],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/pal\/2638"}],"collection":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/pal"}],"about":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/types\/pal"}],"author":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/users\/4"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/media?parent=2638"}],"wp:term":[{"taxonomy":"keyword","embeddable":true,"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/keyword?post=2638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}