1.0Greg Alder's Yard Posts: Southern California food gardeninghttps://gregalder.com/yardpostsrich600338<blockquote class="wp-embedded-content" data-secret="xuDe2zQJDY"><a href="https://gregalder.com/yardposts/dusa-avocado-rootstock-the-story/">‘Dusa’ avocado rootstock: the story</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://gregalder.com/yardposts/dusa-avocado-rootstock-the-story/embed/#?secret=xuDe2zQJDY" width="600" height="338" title="“‘Dusa’ avocado rootstock: the story” — Greg Alder's Yard Posts: Southern California food gardening" data-secret="xuDe2zQJDY" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://gregalder.com/yardposts/wp-includes/js/wp-embed.min.js </script> https://gregalder.com/yardposts/wp-content/uploads/2026/09/story-of-Dusa-FI.jpg1000698The farther I get into growing avocados, the more I appreciate the part of the tree that is hidden underground, the part with the roots, the rootstock. It is the engine of the tree, and it can be its armor. This post dives deep into the development story of one of the toughest avocado rootstocks. […]