I'm going to go back to the old days of indoor growing before LED. We used florescent lights that gave off mostly blue spectrum. That prompted growth during the growing stage. Once the plants matured, we used high pressure sodium lights which were in the red spectrum which prompted flowering and were for the finishing stage.

In today era, my LED lights have incorporated all spectrums at once but seem heavier towards the blue, even though they look purple.
If yours only have a choice of either, I'd go with blue. They will be going outside anyway once conditions improve

Much appreciated HT.
Right now I'm up to 125 tomato plants. Romas, San Marzanos, a German Plum type and Big Boys. With our growing season changing every year, September being the new August, I will start a flat or Heirlooms and Beef Steaks around the end of May. My daughter brought some plants home from work last July that I stuck in ground. We had tomatoes until October. I still haven't done that raised bed yet, maybe this week. 🤷‍♂️

I can't get too excited about my garden right now. I don't have the setup like in the past for starting my seeds and yesterday we had snow and freezing rain.
A few years back I did over 100 tomato plants and it was WAY more than we could keep up with during harvest and canning.
I believe last year we had around 60 plants and even though we use sauce regularly, we still have about 20 quarts left.
Right now I have 50 plants growing and that seems like the right amount for us.

I do agree and see our local farm start tomatoes in the field around mid June with a September harvest. That I may do as well.

Put some lettuce and herbs in today👍.

Peas are in and garlic is cranking. Freezer is stocked with beef to take us through until next March. Ohhh those steaks were soooooo good last night.

Them steaks do look good.    We got our onions, snow peas, beets and lettuce in the ground, put some triple 13 around the berry bushes and fruit trees and cleaned up the garden area some also yesterday.  Here's hoping we don't get any torrential rain with this system moving in today

👍💪HT.

Its like 80° here today. My garlic looks great. All my plants look fantastic also. This weather keeps up and I might start to harden them off for an earlier start🤞

upcoming week in the 70s and 80s with overnights in the 50s==makes me want to get out and put in seeds--HOWEVER last  frost is usually 3rd week in May and a seeding killer.
Perhaps will put in just a few and see what happens--likely a waste of time  but hey --gotta try

There are seeds that are prior to last frost planting. Lettuce, spinach, radish, peas, cabbage, carrots , onions, taters are all good to go. If you wait until May, they won't tolerate the summer

I got all the plants I have in yesterday. Still need to go pick up some Bell peppers and eggplants. Everything should be all in by next week.