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easy grow guide triploid marigold
endurance (F1 Tagetes triploid)
Plug Production: 288 plugs
Sowing/Media:
Use a well-drained, disease-free, peat-based plug medium with pH 6.0-6.2, EC <0.75mmhos. Cover seed with a thin layer of vermiculite, otherwise the seedlings will root into the vermiculite and make transplanting difficult. Keep medium uniformly moist until seedlings are hooking above the covering, media temperature should be 68-72°F (20-22°C), keep light levels <1500 f.c. Dry down slightly to avoid stretch, keep media temperature at 68-72°F (20-22°C), germination should be complete in 5-7 days. Allow media to dry further between irrigations to improve rooting and control stretch but avoid wilting. Media temperature can be dropped to 65-68°F (18-20°C), light levels should be <3000 f.c. Fertilize with 100-150ppm N from 15-5-15, 17-5-17 or 13-2-13, keep media pH at 6.2-6.5 no lower and EC <1.5mmhos. Practice good wet/dry moisture cycle, media temperatures can be lowered to 60-65°F (15-18°C), keep light levels <3000 f.c. Fertilize with 100-150ppm N from 13-2-13 to help tone the seedlings. Growth can be controlled naturally by good moisture management. If needed, use sprays of B-Nine (1500 – 2500 ppm), A-Rest (3 – 10 ppm), Bonzi (10 – 20 ppm), or Sumagic (2 – 7 ppm) to control growth. It is best to run your own trials to avoid overdosing, as weather and cultural regimes can affect the requirements.
Germination Stage 1: (3-5 days)
Germination Stage 2:
Germination Stage 3:
Germination Stage 4:
Growth Regulators:
Growing on to Finish: Packs, 4-6 ” (10.5-16cm) pots
Media:
Use a well-drained, disease free, peat-based growing mix with pH 6.2-6.5, EC 1.5mmhos
Temperatures:
Temperatures for rooting out after transplant should be 65-68°F (18-20°C). These can be lowered to 62-65°F (16-18°C) for growing on.
Light:
Light levels should be 3000 - 5000 f.c. as a guide.
Irrigation:
Practice a good wet/dry moisture cycle, avoiding wilt.
Feed 1 – 2 times per week with 150 – 200 ppm N from 15-5-15, 17-5-17, or 13-2-13. Keep media pH 6.2 – 6.5, and media EC 1.5 – 1.75 mmhos. Growth can be controlled naturally by good moisture management. Use sprays of B-Nine (2500 – 5000 ppm), Bonzi (15 – 30 ppm), or Sumagic (5 – 10 ppm) as needed. Drench with Bonzi (2 – 5 ppm) or Sumagic (1 – 2 ppm) when plants are up to size and flowering. It is best to run your own trials to avoid overdosing, as weather and cultural regimes can affect the requirements
Fertilizer:
Growth Regulators:
Pests:
Aphids, Thrips, Spider mite, Leafminer
Pythium, Botrytis, Leafspots (bacterial and Alternaria), bronzing or speckling on lower leaves is likely to be caused by media pH <6.0.
Diseases:
Plug Times:
288 plug:
3-4 weeks from sowing to transplant
Transplant to Finish: Container
Plants/Container
Transplant to Finish
Total Crop Time
Packs
1 x plug
4-5 weeks
7-9 weeks
4” inch (10.5cm):
1 x plug
4-5 weeks
7-9 weeks
6 ” inch (16cm)
1-3 x plug
5-6 weeks
8-10 weeks
Crop times are based on UK trials in optimum conditions. Alternative environmental conditions and cultural regimes can alter the crop times stated above.
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