6,340 Garden Web Discussions | Growing from Seed

How cold does it get at night now in Georgia? How warm during the day? Most seeds germinate at around 68-75 degrees, from my experience, but i guess that would depend on what you are growing. I have a green house that is not really heated a whole lot, but it rarely goes below 50 degrees at night. Maybe you could move the trays in at night?

My lights run 16/8 every day. I put baggies with seeds I want to pre-sprout on top of the lights for heat. There's a 5-10 degree difference with them on versus off. I have five 4' lights on one powerstrip that is attached to a timer so they all turn on and off at the same time. Just keep water away from the outlets and plugs and you should have no problems.
I'm using mine now to start seeds. Over the winter, they were used to keep my tender perennials and cuttings alive.

I am in MA near Taunton ..and I started Toms,peppers to plant out in May or so...I know I'll have to hardern them off very carefully to avoid shock.I will replant them deeper and pinch top growth ruthlessly if it means I can eat Mater sooner. I hate waiting till the end of Aug to get a few for al my hard work.


I can confirm that you actually dont need lights to grow plants. I have been successfully growing zinnias, petunias, impatiens and other plants by just putting them in my south facing kitchen window. It is actually like a patio door so it is quite big. sometimes they do get leggy but I see no difference in a few weeks.

Try Heronswood. They currently carry a Helianthus, although it doesn't specifically say "argophyllus". Sorry, that was all I could find. MacThayer
Here is a link that might be useful: Heronswood

Lumens make a huge difference, especially if they are coming from a spectrum plants can use.
For instance, on a bright sunny day in summer, your plants will be getting ~100,000-120,000 lumens.
I would be wary of a fluro tube that promises 100 lumens per watt. The only ones I know of that do that produce a lot of light in a spectrum plants do not use.
Mike

Thanks Mike
I think I will stick to what I bought at HD
Two 3200 Lumen 40 watt Daylight 6000K(or close to that number)_
Two 3000 Lumen 40 watt Coolwhite 4000K(or close to that number)
I plan on using one of each on the two shoplights I will have sied by side
Sound good?


Most all reputable seed suppliers will offer dwarf varieties of both. TGS (linked above) is excellent but there is also Cooks Kitchen Garden, Johnnys Seeds, Seeds of Change, and many more.
The Garden Bazaar directory here provides links to 3 pages of seed vendors. ;)
Dave
Here is a link that might be useful: Garden Bazaar - Seed Vendors

looks good
Here is a link that might be useful: Gardening by the Seat of my Pants

Quite the set up there!!!!!!
Everything looks great!
Here is a link that might be useful: Little River Nursery


This is a definite nutrition problem , I would go with what petzold says . Another questions, where are you obtaining your seeds from?
Here is a link that might be useful: LittleRiverNursery

Last year I tried 15 of the Jiffy pellet pots. 0 had mold in them and 0 damping off. That surprised me because I used the Park's seed starting system and lost half of those.
I had to take the Jiffy plants out of the plastic tray they came in as soon as they started to grow (accidental crunching of the flimsy plastic tray...) and I put them on a regular dinner plate. They lived on the plate until they were planted out. Maybe the tray crunching was a blessing in disguise?

A spray with a VERY dilute mixture of 3% H2O2 and water gets rid of any mold. Last year was the 1st time in MANY years of using Jiffy7s that I have even seen any mold. I have NEVER(knocking on wood) had any problem with damping off with the Jiffy7s. I have been using them since their introduction and have had 0 problems. Watering from the bottom is the key. IMHO they are great.
JMO,
Tom




I used the Jiffy Peat Pellets with the 72-tray. If you google 'Jiffy Greenhouse', it should take you right to it. The tray, lid and pellets cost me $6.00 at Walmart. I've seen a similar 'knock-off' product at Home Depot made by Burpee for roughly the same price, although the pellets seemed smaller.
Once my tomatoes get their first 'true' set of leaves and/or I see roots coming out the side netting, I transfer to peat pots ($1.39 for ten of them) with actual soil to fill in the spaces. I only use the 3' pots since I don't plan on them living there long enough before the whole thing, pot and all will get transplanted to the garden.
Also note that you should be able to skip the whole peat pot thing and move the pellets with seedlings directly to your garden. I'm just doing it to free up the tray so I can start my 'round two' of plants.
Here is a link that might be useful: You can find these cheaper locally
I use the small 2 oz. or so bathroom mouthwash plastic cups that you find in the supermarket, placed in an aluminum food tray that is sold with a clear plastic dome which can also be bought at supermarkets, Walmart, etc.
Punch a couple of holes in the bottom of the cups and fill with a moistened seed mix. You can write on the cups so that you can mix them in the tray. The trays come in several sizes and are very inexpensive.
If you don't have a heat mat, place the tray on top of your VCR or cable box. The heat is just about right for quick germination.