Insects & Disease
• Early watering and good weed control will generally alleviate most problems
• Pyrethrin will control most insects
• Seeds should be buried 2 times their narrowest dimension and covered with finely raked soil or vermiculite unless otherwise noted
• Some varieties can take over a month to germinate so mark your rows, keep them moist, and for larger seeds like sunflowers, use bird netting
• As a general rule, flowers can be sown when soil has warmed to at least 55°F
• Apply 1-2 cups of TSC’s Complete fertilizer per 5 row feet, and 1 inch of compost
• If you prefer to soak your seeds: soak in 85°F water for 1-3 hours and plant immediately — longer soaking times are often detrimental; seeds need air to live
The color and beauty of a flower garden can lift the spirit and renew the soul, and a bouquet of fresh cut flowers will bring sunshine into your home. Over the years we have conducted extensive flower trials, concentrating on varieties that are easy to grow-many from direct-sowing- have superior color and fragrance, and make a good cut flower. Take a bit of time, relax and enjoy a cup of steaming hot chocolate, and look over our selections. We think you’ll find just what you’re looking for.
Given at the end of each description to give you specific information.
(1) Germination occurs between 70-85°F and within 6-15 days. Sow indoors and cover lightly.
(2) Needs a period of pre-chilling. Mix seeds with moistened peat moss and place in plastic bag. Seal and place bag in an area where the temperature is around 60°F for 2-3 days. Then place in the refrigerator for 30-90 days. After pre-chilling, place seed on sterile seedling mix and cover lightly. Germination may take up to 30 days.
(3) Needs darkness to germinate. Remove cover as soon as germination occurs.
(4) Direct sow in the garden as soon as the soil warms to at least 55°F.
(5) Germination may be slow and erratic. A fluctuating temperature of 75°F during the day and 50°F at night may help.
(6) Needs at least 12 hours of light per day to germinate. Press into the medium but do not cover. Keep moist.
Note: For those varieties that indicate a (1) or (6), a very light covering of vermiculite will allow adequate light to the seed and keep it uniformly moist.
• Sow 5-6 weeks prior to anticipated transplant date
• If seeds need darkness, cover with 2 sheets of newspaper or plastic, remove upon the first signs of germination
• We recommend feeding your seedlings Age Old Grow, diluted to 1/4 strength
Harvest & Storage
• For fresh-cut flowers: Harvest in the morning when flowers are their freshest and petals are just opening
• Cut with a clean knife that has been dipped in a solution of 10% household bleach
• A few drops of bleach in the vase will prolong their beauty
Nasturtiums thrive in poor to average, slightly acidic, well-drained soil. Keep watered during dry weather, and do not fertilize. If aphids infest nasturtiums, cut off the infested growing tip and destroy it. Otherwise, a quick jet of water from the hose will dislodge and kill aphids.
Season & Zone
Exposure: Full sun to partial shade
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Tropaeolum minus. The flat-faced flowers of Black Velvet Nasturtium face upwards, and are held above the pale green foliage. The flowers themselves are such a rich, dark shade of mahogany, they appear almost black from any distance. This compact Nasturtium is perfect for container growing, and it blooms continuously throughout the summer. The edible flowers look sensational as garnishes, and bring a peppery kick to salad mixes.
Sow seeds 5mm – 1cm (¼”-½”) deep. If starting indoors, provide darkness during germination, followed by bright light. Space smaller varieties 15-30cm (6-12″) apart, and the big ones like Tall Single 60-90cm (24-36″) apart.
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The annual flowers in this group have been called many colourful names, including Bitter Indian, Canary vine, Canary-flower, Indian cress, Monk’s cress, Flame flower, and plain old garden nasturtium. Nasturtiums thrive in poor to average, slightly acidic, well-drained soil. If growing in full sun, consider using some rocks around the plants to prevent their roots from getting too hot. In partial shade, plants tend to have larger leaves and a more sprawling habit. Keep watered during dry weather, and do not fertilize. Continue reading below for more tips on how to grow nasturtiums from seed as companions for Brassicas, cucumbers, melons, radishes, and tomatoes.