Impatiens Seeds
Impatiens walleriana
Sometimes called Busy Lizzie, these annuals perform well in all zones.
Vigorous growth, tall types reach about 2', and dwarf types reach 6" high.
Impatiens are enjoyed for many months of brilliant color in partial or full
shade. All of our Impatiens are high-energy seed, meaning superior uniform
germination for you.
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Xtreme White Impatiens Seeds
Xtreme's are just that - 2�" large in flower size and outstanding
performance with a height of 8-10" and spread of 8-10". They love
the heat!
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Flower Garden-Tips on Growing Impatiens From Seed
Start by filling your seed flats with a good seed-starting mix or formula that you should wet thoroughly. Scatter your seeds over the top of the seed tray and press down lightly. Do not cover seeds. Also when you water do so from the bottom of the tray as to not disturb the new seedlings. Our seeds are refined which improves the germination and uniformity.
Stage 1 Radicle (Embryonic Root)
Time of Radicle emergence 3-5 days.
- Keep media moist and near saturation by watering before placement of seed.
- Do not cover or bury the seed, as the seed needs light for germination.
- The germination temperature at this stage should be 72 to 76�F (22 to 24�C).
- Light levels at 100 to 400 fc (foot candles) will enhance the germination process.
- Soil pH should be 6.0 to 6.2 with soluble salts (EC less than 0.75 ). It is important to keep ammonium levels less than 10 ppm. (parts per million)
- Plants are very sensitive to high salts (EC) during this stage.
Stage 2 Hypocotyl (Stem and cotyledon emergence)
Time of emergence 10-14 days.
- First start reducing moisture levels once the radicle emergence occurs. At this point allow the soil to dry out slightly before watering again, this will aids in the germination and rooting process.
- Soil temperatures at this point should be 72 to 75�F (22 to 24�C).
- Light levels should be 450 to 700 fc (foot candles). If you are using a supplemental lighting system for about 2 weeks � do so after the cotyledons have expanded for 12-18 hours per day.
- It is important to maintain ammonium levels at less than 10 ppm. The soil pH at 6.0 to 6.2 with soluble salts ( EC less than 1.0).
- You can start to fertilize at this point. Use a 50-75 ppm (parts per million) N from 14-0-14 formula or a calcium/potassium nitrate feed once the cotyledons have fully expanded.
- It is important to alternate your fertilizing feed schedule with every 2 -3 clear water irrigations.
Stage 3 Cotyledon (Growth and development of true leaves)
Timing of this growth 14-21 days.
- At this time allow the soil to dry out thoroughly between each watering or irrigations, however do avoid severe wilting of the seedlings, to promote root growth and the shoot growth.
- Maintain the soil pH at 6.0 to 6.2 with the soluble salts ( EC less than 1.0)
- You can increase the feed at this point to 100-150 ppm N from 20-0-20 and alternate with 14-0-14 or any other calcium/ potassium nitrate base fertilizer.
- It is important to alternate your fertilizing feed schedule with every 2 -3 clear water irrigations.
- Soil temperatures should always be between 68-72�F (20-22�C).
Stage 4 Getting ready for transplant/growing on period
- Do allow the soil to dry thoroughly, however not to allow the plants to wilt.
- Keep your temperatures maintained at 62-65�F (17-18�C).
- Maintain the soil pH at 6.0 to 6.2 with the soluble salts ( EC less than .75)
- You can continue to fertilize with 14-0-14 or with a calcium/potassium nitrate feed level at 100 to 150ppm N as needed.
- Impatiens do not require a high feed level, they prefer a low to moderate level. By having excessive amounts of feed your result will be lush and vegetative stretched seedlings. This is what you do NOT want.
For the growing on to finish stage:
- Night temperature: 62-65�F (17-18�C)
- Day temperature: 65-75�F (18-24�C)
- Maintain light levels as high as possible while you also maintain moderate temperatures.
- Once plants are rooted to the sides of the containers, you can allow the plants to wilt down prior to irrigation as this will provide some height. To control height you can withhold fertilizer, especially ones with phosphorus and ammonium form of nitrogen.
- Remember that Impatiens are basically shade loving plants and should not be exposed to excessive levels of sun. If they are hardened properly the plant can handle 4-6 hours of morning sun.
USDA Hardiness Zone -First Frost Date- Last Frost Date
- Zone 1 -July 15th -June 15th
- Zone 2 -August 15th- May 15th
- Zone 3 -September 15th May 15th
- Zone 4 -September 15th May 15th
- Zone 5 -October 15th April 15th
- Zone 6 -October 15th April 15th
- Zone 7 -October 15th April 15th
- Zone 8 -November 15th March 15th
- Zone 9 -December 15th February 15th
- Zone 10 -December 15th January 31st (sometimes earlier)
- Zone 11 _No frost. No frost.
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