[NAFEX] impatiens

Doreen Howard gardendiva at charter.net
Sat Feb 19 14:42:07 EST 2005


Impatiens seeds are light sensitive, so sow them on top of the starting 
medium.  Don't cover them, just press gently into the medium so seeds make 
contact.  Cover seed pans with a lid or put them in a Ziplock plastic bag to 
trap humidity.  Use a heating cable or mat for bottom heat between 70-85F.

As to light:  I use a shop light fixture hung 2-4 inches above seed pans. 
Go to a Home Depot or Wal-mart and get two kinds of fluorescent tubes for 
the fixture.  One cool light tube (blue pigments) and the other a red light 
spectrum tube.  The red tubes are often labeled Aquarium or Plant Lights. 
The two different light spectrums provide as close to sunlight as you can 
get with artifical light.

Seeds should sprout in a few days.  Then, remove the heat and covering. 
Keep lights always 2-3 inches above seedling tops.  I hang my light fixtures 
on chains so I can lower or raise them.  Feed seedlings with a dilute 
water-soluable fertilizer every 5 days--I use Maxi-Crop.  Run an oscillating 
fan in the area for at least 8 hours daily so that a breeze hits the 
seedlings.  This does two things.  It prevents damping off and other fungal 
problems, and the motion stimulates a hormone in the seedlings that produces 
stocky stems.

After seedlings have two sets of true leaves, pot them up into cell packs or 
3 inch pots to continue growing.

This technique also works well for starting petunia seeds and any other seed 
that needs light to germinate.  Currently, I have red celery, black 
geraniums and Blue Fesuce ornamental grass seeds under lights in this 
situation.
Doreen Howard 





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