The first and most important step is to scarify each seeds. Grow canna lilies in U.S. Department of Agriculture plant hardiness zones 8 through 11. This will cause micro-abrasions on the shell surface, making it much easier for it to absorb water. Scarifying Your Seeds. As the name suggests, scarifying is the process of wearing away the shell, so the first thing you need to is scuff your seeds. Only the tiniest amount needs to be exposed and it is better to file too little away than too much. By the time June rolls around, your lawn will have recovered and look fantastic. To scarify your seeds, take a file and carefully rub off a small portion of the black seed coat, stopping as soon as the white underlayer appears.
Pick each seed up with a pair of needle-nose pliers and rub a metal nail file against the outer coat of the canna seed. Canna Lilies have a very hard shell which needs to be penetrated so that the embryo can erupt from the seed. Holding the seed with one hand, use the corners of the clippers to nick the seed. 1. If you simply planted the seeds, whole, germination will be more unpredictable. Put your seed(s) in it, and shake it around for 30 – 60 seconds. Scarification increases the germination rate of the seed. If your lawn contains a lot of thatch, you’ll need to scarify quite heavily.
If you've ever had to scarify a bunch of canna seeds you know how annoying the process is. Autumn: The Best Time For Heavy De-Thatching. It is through here that the growing shoot will break through. By chipping the seed you are in control of timings. This can be accomplished by several different methods. To do this line a small matchbox with sandpaper. Large, round canna seeds have a very hard seed coat and look like BB-shot. However, water has to reach the seed before it can begin sprouting. Canna seeds have a very hard coating which wears down over time in a moist environment. If you look at the seed carefully, you will see a scar (hylem). Start the canna seeds 8 to 10 weeks before the last frost date in your area. I have found that the easiest and quickest method is using a pair of nail clippers. The key to starting cannas from seed is to remove a small bit of the seed coat (a process called scarification) so water can get inside the seed. You should file the coat on the opposite side to the scar in order to avoid damage to the embryo. If it’s particularly wet in April, do it in May. The plants have obviously worked out when is the best time for their children to emerge in the wild, but we are not interested in all that. How to Scarify Seeds. I've also used seed soaking in place of seed scarification in the case of canna seeds. Once canna seeds have been scarified, they are easy to grow. … Either with a hand scarifier or powered machine with a de-thatching cartridge. Scarification is needed for some species because they need the watertightness of a solid hull to make it through their dormant period in winter. To make things easier with canna seeds I've brought water to a boil, removed it from the flame, and just plopped a handful of seeds into the boiling water. So scarify lightly in April when the weather allows.