{"id":2872,"date":"2019-05-10T00:06:40","date_gmt":"2019-05-10T07:06:40","guid":{"rendered":"https:\/\/depts.washington.edu\/hortlib\/pal\/pal-question-167\/"},"modified":"2024-01-17T10:08:38","modified_gmt":"2024-01-17T18:08:38","slug":"seed-germination-of-acer-triflorum-and-acer-griseum","status":"publish","type":"pal","link":"https:\/\/depts.washington.edu\/hortlib\/pal\/seed-germination-of-acer-triflorum-and-acer-griseum\/","title":{"rendered":"seed germination of Acer triflorum and Acer griseum"},"content":{"rendered":"<p><strong>I am interested in the seed germination requirements of <em>Acer triflorum<\/em> and <em>Acer griseum<\/em>.<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>There is information in <em>The Reference Manual of Woody Plant Propagation<\/em> by Michael Dirr and Charles Heuser (Varsity Press,2006):<\/p>\n<p><em>Acer triflorum<\/em> seed is &#8220;doubly dormant and when fall planted will germinate the second spring and sporadically thereafter. Seed, unfortunately, is often not sound [&#8230;] Nine months warm followed by 3 months cold gave reasonable germination. If seed is received dry it may be prestratified for 6 months and then sown. Germination is less than 1% the first year but is very good the second.&#8221;<\/p>\n<p>The authors state that with <em>Acer griseum<\/em>, &#8220;the biggest problem is poor seed quality&#8221; (between 1 to 8% viability). Also, seed production from an individual tree varies widely from year to year. &#8220;Seeds are doubly dormant and if fall planted require 2 years, some germinating the third year and beyond. The pericarp wall is extremely tough and dormancy is caused by a physical barrier as well as internal embryo conditions.&#8221; Dirr says that he has cold-stratified seed for 90 days, split the fruit wall to extract the embryos, and planted them in vermiculite with a fair amount of success. Growing this tree from cuttings is considered extremely difficult, and grafting (onto seedling <em>Acer griseum<\/em> seems to be the easiest propagation method.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I am interested in the seed germination requirements of Acer triflorum and Acer griseum. &nbsp; There is information in The Reference Manual of Woody Plant Propagation by Michael Dirr and Charles Heuser (Varsity Press,2006): Acer triflorum seed is &#8220;doubly dormant and when fall planted will germinate the second spring and sporadically thereafter. Seed, unfortunately, is often not sound [&#8230;] Nine months warm followed by 3 months cold gave reasonable germination. If seed is received dry it may be prestratified for&#8230;<\/p>\n<div><a class=\"more-link\" href=\"https:\/\/depts.washington.edu\/hortlib\/pal\/seed-germination-of-acer-triflorum-and-acer-griseum\/\">Continue reading <span class=\"screen-reader-text\">seed germination of Acer triflorum and Acer griseum<\/span><\/a><\/div>\n","protected":false},"author":4,"featured_media":0,"menu_order":0,"template":"","keyword":[436,497,96],"class_list":["post-2872","pal","type-pal","status-publish","hentry","keyword-acer","keyword-germination","keyword-propagation"],"acf":[],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/pal\/2872"}],"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=2872"}],"wp:term":[{"taxonomy":"keyword","embeddable":true,"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/keyword?post=2872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}