Nasturtiums are my favorite annual to plant in the garden because they're very versatile plants. They're easy to start from seed, they produce beautiful, edible blooms and they grow very well in poor soils. Whether I plant them in the ground or in containers nasturtiums never ask for much attention. In fact, nasturtiums in my garden thrive on benign neglect. I plant nasturtium seeds early in the spring and forget about them until it is time to collect nasturtium seeds. Last year I grew Climbing Nasturtium "Moonlight" in the garden for the first time, this year I'm growing Nasturtium, Climbing, "Spitfire."
Given my experience growing nasturtium "Moonlight" last year I was already prepared for how nasturtium "Spitfire" would react to growing in my garden. The microclimate in the garden must be too warm for the climbing varieties of nasturtium. I'm not complaining, really, the same microclimate allows my Voodoo Lily to overwinter. The climbing nasturtiums don't seem to start vining, or sending out long shoots, until about August. If you read the post on "Moonlight" you'll see that the day after I complained about them not vining or trailing to Renee's Garden the plant sent out a long vine. "Spitfire" is a couple of weeks ahead of where "Moonlight" was last year. Today I had vines long enough to actually start training them up the bamboo stakes in the cinder block pots I planted them in.
As the flower bud opens "Spitfire" looks like it will be a really red nasturtium bloom, but as you can see from the photo above it is more orange than red. Renee's Garden, who I got these seeds from, describes them as a "scarlet orange." The bloom color looks like molten lava to me.
"Spitfire" has foliage that is an average green, unlike some nasturtiums that have a blueish hue to them, the darker foliage of nasturtium "Empress of India," or the variegated foliage of nasturtium "Alaska." When the foliage gets long enough to start training up a support structure like a trellis or a fence all you have to do it wind the longest stems up and around. Some stems may break near the tips but they'll quickly be covered up my more vines and leaves, and of course more blooms.
In my garden nasturtiums continue to grow well after the first frost and won't die down completely until we get a really good freeze. This being my second year of growing climbing nasturtiums I think I've exhausted my interest in growing them. While they're my favorite garden annual I think the climbing varieties don't perform as well in the heat of summer as the mounding varieties. Next year I'm going back to performing nasturtium diversity and planting several varieties at the same time.
Update: In early October the rest of the garden is starting to fade and turn brown but 'Spitfire' continues to grow and climb up the trellis I made for them out of bamboo stakes.
Where to Plant Nasturtiums.
The mounding varieties of nasturtium look beautiful planted at the edges of garden beds or paths. Even in containers or window boxes they spill over the sides of pots enough to add interest and movement. The climbing nasturtium varieties like "Spitfire" and "Moonlight" would also work well as a ground cover, if you don't want to train them up a support or drape them over the side of balcony gardens.
Previous Posts on Nasturtiums:
Collecting Nasturtium Seeds Video.