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easy grow guide tropaeolum (Nasturtium) ice cream sundae (Tropaeolum majus)
Plug Production: direct sow into a 3 or 4” (9 -11cm) pot or final container
Sowing/Media:
Use a well-drained, disease-free, peat based plug medium with pH 6.0-6.5, EC 1.0- 1.4mmhos. Media should be kept evenly moist and media temperature should be 66-71°F (19-22°C). Light is not necessary for germination and seeds should be covered with approx. 0 .5” (1cm) of disease-free, peat based compost. Once cotyledons emerge, reduce media temperature to 60-70°F (16-21°C), but keep the media moist. Light levels should be between 1000-2000 f.c. HID lights can be used to boost light levels during periods of low light/ for early sowings. Maintain temperature around 60-70°F (16-21°C) during the day and 50-60°F (10-16°C). This will help minimise stretch. Dry media down slightly between irrigations but avoid wilt. Fertilize as required (once a week) using balanced calcium fertiliser such as a 14-0- 14 at 50-100ppm. Keep media pH at 6.0-6.5 and EC 1.0-1.4 mmhos.
Germination Stage 1: (7-10 days)
Germination Stage 2: (10-14 days)
Germination Stages 3&4: (10-14 days)
Growing On to Finish: 10- 12” (25 -30cm) container/ pot
Media:
Use a well-drained, disease free, peat-based growing mix with pH 6.0-6.5 and EC 1.0- 1.4mmhos. Day temperatures can be 60-70°F (16-21°C) and night temperatures can be 50-60°F (10- 15°C). Light levels can be maintained at 1000-2000 f.c. HID/LED lights can be used to boost light levels during periods of low light/ for early sowings. This will help minimise stretching. Once plants have established, practice a good wet/dry irrigation cycle. Control foliar diseases by creating good air movement and approved fungicides. Feed once a week with 100-150ppm N from a balanced fertiliser such as 15-0-15, 13-2- 13. Calcium is important especially during fruit development. Use a calcium based fertilizer or add to your existing fertiliser. Once fruits begin to set, fertilise every irrigation. Flush media every 3 rd or 4 th watering to avoid salt build up. Good moisture and fertiliser management combined with the correct light levels and temperatures should remove the need for PGRs. This variety is naturally compact. GROWTH REGULATORS MUST NOT BE USED ON EDIBLE VARIETIES
Temperatures:
Light:
Irrigation:
Fertiliser:
Growth Regulators:
Pests:
Aphid, Whitefly, Caterpillar.
Mildew.
Diseases:
Plug Times:
3- 4” (9 -11cm) pot: 3 seeds per pot
14-20 days from sowing to transplant
Transplant to Finish:
Transplant to first flowers (retail)
Container
Plants/Container
Total Crop Time
10 ” Pot
5 – 7 seeds per pot
7-9 weeks
8-10 weeks
12 ” Pot
7-10 seeds per pot
8-10 weeks
8-10 weeks
Crop times are based on optimum conditions. Alternative environmental conditions and cultural regimes can lengthen the crop times stated above.
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