Think of them as living things and they need nourishing. Water does that. You have done a good job of bringing them along in the container and keeping them from freezing in your garage. The bulbs have roots which does protect them down to severe temperatures----40 below zero..C or F. The foliage that has been produced may suffer...but it should not delay the proper time for its revival when temperatures improve. Keep watering them to keep them alive....not like you usually do, just to give the bulb some moisture. Mulching heavily should do the rest.

Here's some photos of my frontyard and backyard plants. Quite a lot of damage to all the tropicals, but all the one's that were covered and lit definitely survived. Here's my big clump of Canna lillies, Hibiscus mutabilis, banana. These were covered with frost cloth and had 3 separate flood lights heating up the area. No damage at all on this Hibiscus mutabilis. The taller one though didn't do so well. These ones though were a big surprise to me on how well they did with all those freezing nights unprotected. Giant umbrella plant and split leaf philodendron. Here's my poor Passion fruit vine. It did well the first two nights, but couldn't handle the third freezing night. This one was also left unprotected. succulents all did well. Here's some Cannas that were not protected. Most of them all died back along with my Alocasias. They did well the first night since they're next to the wall of the house. Mango, Ice Cream Bean Tree, Longan, Yellow Guava, Brugmansia. I had to clump them all together and moved them closer to the house, covered them in frost cloth and placed a 100watt flood light underneath them. All did pretty well :) This hibiscus was protected all 4 nights. Alocasia, Cannas, Calla lillies. All left unprotected but were underneath a patio and close to the wall. My Moreton Bay Fig seedlings did pretty well. I just covered them in frost cloth, no lights. Pithecellobium dulce (guam�chil) tree, Left unprotected and it looks okay right now but I have a feeling that it'll drop leaves before spring. Pink guava left unprotected as well :( I'm pretty sure this guy will shoot back out though by spring. Hong Kong Orchid tree, left unprotected. Minimal damage on the top canopy, and all the blooms got fried :( Hibiscus left unprotected :( 3 year old Castor bean tree left unprotected as well. The last two freezing nights melted all its leaves. Red Ixoras left unprotected. Did pretty well since they're planted underneath the Castor bean tree, but the last freezing night got to them since the Castor bean's leaves all melted by that time. Plumeria was protected under frost cloth and close to a floodlight and still got damaged. All its leaves fell off and the tips are dark. Hopefully it'll pull through. Chinese Yellow Banana did alright. Its pups that are sprouting on its side did better.

I contacted Van Engelen and the gentleman I spoke to said it was either poor root development or more than likely because of the warm weather and lack of rain. It looks like only my double tulips are shorter than they should be. The others are where they should be. I think watering, the recent rain and the cooler temps have helped.

Caulking can be affected depending on what is used, a silicone based sealant not so much, latex yes. Not sure on Stucco but normally it is mixed with water so would lead me to believe it may, in the Northeast part of the country and I am sure elsewhere they use calcium chloride, anti-hydro or some other type antifreeze product to help. Also the quality of the work may suffer due to the MEN BEING COLD, I knows should not happen but it does.