One of my goals for the 2011 growing season is to try expanding into other species of the nasturtium genus (Tropaeolum). My love of the well known and edible Tropaeolum majus is well documented on this site, and elsewhere, but I have never tried to grow, nor have I even seen any of the other species in person.
I’ve been wondering why the others are not popular in my part of the world, and have concluded that it must be down to climate and their difficulty to grow here. Like its cousins, the typical garden nasturtium will not survive the winter in my zone (around 5-6 depending); however, it is easy enough to start from seed each summer. Some will even self-seed and come back on their own the following year.
The two species I have decided to try, T. speciosum (aka Flame Flower) and T. peregrinum (aka Canary Creeper) are also not hardy, but what’s worse is that they are more difficult to start from seed. In fact, I am quickly discovering that T. speciosum is downright near impossible to germinate and can take up to a year or longer to budge! The stories I am hearing are not hopeful. I have a feeling this will be a test of wills, requiring every ounce of patience I have managed to cultivate as a gardener. T. peregrinum appears to be the easier nut to crack. Germination rates are listed at around 20-30 days.
Either way, I’d better get on starting them sooner rather than later. I’m not sure I am up for the Flame Flower Challenge, but Canary Creeper’s kung fu seems beatable. If neither work,I can always depend on good ole T. majus to make an appearance sometime in June. I’m thinking about trying a variegated variety with salmon/peach flowers called ‘Saucy Rascal’ and ‘Empress of India’ is a compact variety that I always grow in pots, no matter what.
UPDATE: T. peregrinum (aka Canary Creeper) took less than a week to germinate. All of the seeds I started germinated and the plants are now taking over my seed starting station. I had to cut them back! Meanwhile, T. speciosum continues to do nothing.