I have a good tip for effective seed upbringing.
Seedbaths/seedmordant
Seedbaths are sustaining the germpotency, and helps to fend damaging organisms during
the germination and growing phase, and they stimulate the growth.
For the bath/mordant I use humofix
http://www.abtei-fulda.de/xtcommerce/product_info.php?products_id=8
you can also make it yourself with following ingredients:
Chamomile flowers, stinging nettle, valerian root , dandelion leaves, oak bark, milfoil flowers, mix it all together in equal parts and pulverize it. Mix 1 teespoon of the powder with ½ l rainwater and a lacing of milk, and honey, and let it steep for 24 hours and stir occasionally.
For the bath:
Disperse ¼ teespoon Humofix in ¼ l rainwater , let it steep for approx.
6 hours, put the seeds in a small sac ( filter paper) add it to the mordant and let it soak. There are different soak times for different seeds ( between 15-60min), but I let them soak approx.30 min.
Or let the seeds soak in the above mentioned selfmade mordant. You can also make a seedbaths with milk or chamomile tea, this is the simplest variant, but the soak times are up to 90 –120 minutes.
Happy gardening !