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You can sprout sea-beans, but keeping them alive outside in a cool winter climate is difficult. If you can keep them inside (away from temperatures below 50 degrees F/ 10 degrees C), they will survive, but most of them grow so fast that they can easily take over your home.
 Mucuna albertisii being sanded |
To grow any sea-bean, fresh water needs to reach the living seed inside the protective casing. For hard sea-beans, like the true sea-bean or sea-heart, and the Mucuna or Hamburger Bean, you must first create a hole in the outer shell to let water in. This can be done by sanding the seed in one spot until a hole appears, or using a Dremel tool to grind away a spot or cut a small portion of the seed coat away. Grind until the internal "meat" shows thru, but not damaged. For Mucuna, avoid the area at either end of the hylum, as that is likely where it will sprout from. Put the sea-bean in a shallow dish of fresh water and leave it overnight or about 24 hours. The bean will swell as it absorbs water. Remove the swollen seed from the water, plant it in warm, moist soil and wait for it to sprout. |
How long does that
take?
The time varies, but usually the sea-bean will sprout within a week, a small shoot projects from the seed. Of course, the time varies depending on the seed species, temperature, and seed viability. Some sea-beans may be non-viable and will never sprout, so you may want to try sprouting a few at a time. Also, variabilty improves results: cut holes different places in the seeds; let the bean soak for different lengths of time, and then plant them at different depths in the soil, etc.
Then what?
After the seed sprouts, plant it in good potting soil, give it direct sunlight, and continue watering. During early growth periods, some Hamburger bean sprouts may grow 6 to 12 inches a day!
Where else can I go for information?
Robert Maxey provides alternative tips & methods on his web page for
Growing Sea Beans.
 Photo: Maureen and Stan Zerkowski |
IT'S ALIVE!
The plants shown here were sprouted from some "soft" seeds ("corkies") found at Cocoa Beach, Florida. On the bench from left to right are a (a) palm of undetermined species, a (b) Hog Plum (Spondias mombin and (c) Tropical Almond (Terminalia catappa) in the same large pot, a (d) Red Mangrove (Rhizophora mangle), and a (e) Loquat Tree (Eriobotrya japonica) |
| Early this spring I took a healthy looking Sea Purse (Dioclea reflexa) bean and rubbed one side of it on a rough concrete block until I wore a small hole in it,then I put it in a small glass of water for a couple days, then I planted it in a small clay pot filled with potting soil and kept it moist for a little more than a week when I saw a small plant start to emerge. |
 Photo: William Pope |
