Carl Linnaeus spent the 18th Century like an enchanted child, pointing at and naming (in Latin) all the life forms that he found. His own child, Elizabeth, noticed that when she looked at nasturtium flowers in the evening they seemed to flash. Research by different scientists of the day into the incident proposed different conclusions including electricity, phosphorescence, and the paranormal.
Carl and his budding botanist daughter seemed content to dub it the Elizabeth Linnaeus Phenomenon and leave it at that. You may have a similar experience with these gleaming blooms, but not to worry, you are not being haunted, its probably simply an optical illusion caused by the interaction of green and orange in the pale light of dusk.
Nasturtium ‘Gleam Hybrids’ is a moderate spreading variety and the variety we would recommend for hanging baskets and for containers. The vines grow to around 1.2 metres, they are substantially longer than Jewel but much shorter than the tall climbing single. Good for beds, training on a trellis or fence or for simply growing along the ground.
The Gleam Hybrids offer a particularly nice colour selection with all the shades you expect, primrose, gold, orange, red and mahogany plus a few surprises. The flowers are held well above the foliage with some semi-double and double facing blooms, they will bloom after only six weeks from sowing and will last well into autumn.
In the vegetable garden, Nasturtiums help deter white-flies and rabbits from your crop. The flowers and leaves are both edible and add a peppery crunch to salads, pastas, omelettes, or used as a garnish. Simply plant outside at the same time you plant your peas.
Sow indoors in early spring or direct sow in late spring to early summer
Soak the seed overnight to enhance germination. They should come up in a week to ten days depending on the soil temperature. In very hot summer regions, plant in autumn for winter bloom.
For earlier flowering they can be sown indoors in spring at a temperature of 15 to 18°C (60 to 65°F). Sow in peat pots or trays of moist seed compost and cover with a very fine sprinkling of compost or vermiculite. Keep the surface of the compost moist but not waterlogged; germination will usually take 14 to 21 days. Transplant to larger pots if required or directly to their final position. Gradually acclimate them to outdoor conditions for 10-15 days before planting out after all risk of frost.
Planting nasturtiums is as simple as poking a hole in the soil with your finger and dropping in one of the rather large seeds. Sow directly where they are to flower in late spring onwards. They prefer a sunny open site but will grow in most sites and soils. Seeds germinate in 7 to 21 days and grow quickly in warm weather. The distinctive seedlings and can be told from nearby weed seedlings quite easily.
Plant nasturtiums in well-drained soil in full sun. They will grow in partial shade, but will not bloom well under those conditions. Although they like dry soils and will tolerate drought, water them during the growing season to keep them blooming. They are excellent in pots and containers, but may have to be trimmed back periodically to prevent them from crowding out the other plants.
Nasturtiums perform well in poor soil, but it is comfortable in average garden soil with loose, light texture as long as the soil is not overly fertile with nitrogen. Do not fertilise, except on extremely poor soil, as fertilization will promote leaf growth and suppress flowering. Dead-heading or picking the flowers will prolong blooming. Nasturtium will continue blooming until frost.
One thing to note: if you grow it near other nasturtiums it will hybridise. The following year you will have a mix of all colours. If you grow it on its own the colours will stay true.
Cottage/Informal Garden, Borders and Beds, Hanging Baskets and Containers, Ideal for Children.
Nasturtium is an excellent companion for many plants are generally thought of as a sacrificial plant for insect pests. Studies say it is among the best at attracting predatory insects.
Nasturtium are a good companion plant to many crops but especially to members of the cabbage family, deterring aphids, and beetles while improving growth and flavour. It is a great trap crop for aphids in particular the black aphids and they also deter woolly aphids, white-flies, cucumber beetles and other pests of the cucurbit family.
It has been the practice of some fruit growers that planting nasturtiums every year in the root zone of fruit trees allow the trees to take up the pungent odour of the plants and repel bugs. It has no taste effect on the fruit.
Use near to tomatoes, radish, cabbage, cucumbers and other squashes and plant under fruit trees.
Rabbits hate nasturtiums and keep well away.
Nasturtium flowers and leaves are edible, so long as your garden is organic and make an attractive addition to salads. They have a slightly peppery taste reminiscent of watercress, with a spicier flavour when grown in sunnier, hotter weather. They taste better when young; older leaves can be bitter. The flowers are less intensely flavoured than the leaves. The flowers are particularly dramatic when mixed with dark greens, such as spinach.
If you're in a Martha Stewarty frame of mind, cut up a handful of petals, mix them into a half-cup of softened butter, roll this into a log and re-chill it, and you'll have nasturtium butter to slice and melt atop grilled salmon to impress your dinner guests!
This common name refers to the fact that it has a mustard oil similar to that produced by watercress (Nasturtium officinale). Early English herbalists referred to nasturtiums as "Indian cress" after the conquistadors discovered them in the jungles of Peru and Mexico and brought them back to Spain in the 16th century.
- Additional Information
Packet Size 5 grams Average Seed Count 40 seeds Family Tropaeolaceae Genus Tropaeolum Species majus Cultivar Gleam Hybrids Common Name Trailing Nasturtium Other Common Names Indian Cress or Watercress Hardiness Hardy Annual Flowers Salmon Natural Flower Time June to October Foliage Dark blue-green Height 15 to 30cm (6 to 12in) Spread 30cm (12in) Position Full Sun Aspect West or South facing. Exposed or Sheltered Soil Well Drained (Can thrive in poor soil) Time to Sow Sow indoors in early spring or direct sow in late spring to early summer Germination 7 to 21 days