Advice on greenhouse protocols please

RICHMOND, VA(Zone 7b)

I completed my new greenhouse last week, and spent Sat hauling in my Brug pots, and the ones I dug up I put in plastic bags. I had cut them all back and have over 100 cuttings in jars on the shelves. Do I need to use a flying insect spray in the house in case something should hatch?
Do I wait to change the cutting water only if it begins to cloud, or automatically change it every five days, or so?
I don't plan to feed the mature plants until Feb, but should I feed my seedlings, and the rooted cuttings after I pot them? Any special type of fertilizer for this?
Thanks for any advice!

Greensburg, IN(Zone 6a)

I am totaly new to Brugs also but pretty sure I understood that the water should be changed often, and you do feed seedlings

GOD's Green Earth, United States(Zone 8b)

Polly, I don't start cuttings in water, but I would imagine that you need to change the water quite frequently. As long as your brugs are actively growing, you will want to fertilize them with an all-purpose fertilizer at least every ten days or so. You'll notice that you won't need to water as often, so be careful that you don't overwater. As for the seedlings, I fert them with 1/2 strength until they are beginning to outgrow their 4" pot. You do need to also feed your mature plants unless you want them to go dormant, and I don't think that'll happen in a heated greenhouse.

Congratulations and good luck!

San Leandro, CA(Zone 9b)

I do not have a GH so I am not much use! I am going to heat my hoophouse this winter, that is new for me!! But I will have no cuttings in there. I prefer putting them in dirt to root.

Look @ earlier post by Shadowdgirl using H202 in her water.

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