If you have a southern exposure this will help keep your plants warmer. San Antonio does freeze and some plants will need protection of some kind. If you live on the north side it will be colder south side warmer.

What kinds of seed have you started? How old are they at this point? This will help determine what needs more or less protection. I am about 40 miles north of you and I have several plants that stay outside and other that are inside as I write this. It is supposed to be close to or freezing where I am this weekend. San Antonio may get to mid-30's for Sunday or Monday night especially if it clears out of the clouds and we get some radiational cooling.

Frost blankets, sheets, blankets and boxes all can be used for milder freezes. But Jan. and Feb. can get some low 20's that may need more help than that.

Hope this starts to help you have some ideas to start with?

Happy Growing David

Hi, I have quite a few containers. Some are 5, 3, and 1 gallon. Around 30 or 40 - have't counted. I am in an upstairs apartment but can use downstairs for plants. I had all of them on the deck last year - or first of this year and they were frozen solid for several days - I did cover them with a clear plastic that was kind of thick and had to climb over them to get downstairs. They all made it except one borderline plant for this zone. I have lilies, roses, hydrangeas, hostas, hellebores, iris. When they are downstairs I keep them in a protected area next to a cement wall with a fence - but - they are in an area that gets no sun it is wet and stays damp - sooooo - I am thinking I had better move them to a south facing wall even though they get more exposure. But the drainage is better. I use the plastic only for hard freezes, some frost is ok. Then when the danger is past I remove the plastic and roll it for the next time it gets cold. I hope that helps - I have graduated from taking them in when it got cold - and lived with plants in the kitchen, bathroom, living room and bedroom. Next was to cover everytime it got to the low 40's with a forecast of some frost - til now I can leave them outside, even the fuchsias made it and the hardy orchids bloomed better than ever.