I live in Central Coastal California, zone 11. I bought 2 10x20 rectangles. The 2018-19 winter has been extraordinarily cold. Temperatures dropped into low 40's in November and sustained low 30's for weeks at night with several dips into the 20's. I have put up and taken down almost every day (its now March). The longest amount of time I left planket on was 5 days. I made sure the blanket did not touch the plants by using tall stakes, clothesline clips, and heavy duty office clips and pool noodles on tips of branches to hold planket away. A few times I weighted it down with planters and bricks due to wind. So far I haven't had any frost or ice damage. Sun does get through it and it can get too hot, much like a greenhouse. The blanket is light weight, thorns can tear it, and so can tying it too tightly. The fabric does not run, but can pull apart in a tear if caught on something like a nail, screw, or thorn. Even damaged a bit it still works. Water does get through it and weighs it down. It is a plastic material so will transmit cold through to plant, that is why I staked it above and out from the plant. I am so glad I had these on hand when the temps went so cold! I will be buying a few more for next season to cover my small greenhouses for more insulation, and to protect all the seedlings I have started this year. I will be smarter next year though and make sure I use against a wall of house to give height and act as another side to the planket. (My umbrellas would tip over too often. ) I did not receive anything for this review.

Use esta manta en el invierno para cubrir algunas áreas que tienen flores que no resisten el frío.
Son fáciles de usar y cuando ya no se necesitan son fáciles de doblar y guardar.
No ocupan demasiado espacio para ser utilizadas en el siguiente invierno.
Están a un buen precio.

I have some big rose beds. The two tent like structures, I use folding trellises to make my frames, then throw one 20ft cloth over them and weight down with some large river rocks. They do have grommets but I have plenty of river rock. The one that is my biggest rose bed is another frame created out if flat trellises and some support cans underneath. I have to use two 20ft covers to cover all sides. I have used these over and over in Colorado, and always hold up well. Haven't lost any of my hybrid tea roses.

It saved my plants during the Texas weather apocalypse.

We live near Conroe, TX where the temperatures drop to 25 a few times in the winter, occasionally to 20, rarely below. So these covers with stakes are pretty nice for a quick install and look nicer than sheets or other non-purposed covers. The material is lighter weight than a heavier cotton sheet, but it is sufficiently dense to get the job done against frost. It tends to shed rain better than a sheet and does let the plants breathe, unlike plastic. The stakes match grommets about the perimeter to assist anchoring the fabric against winds, but unless you can spread out the fabric across your plants and have the anchors come down to the earth just right, you will need some weights or other anchoring means to assist holding the fabric down. Also, we found in our premium, soft bedding soil, the stakes do not hold nearly as well as in the natural clay beneath our grass sod. Also the grommets will easily pull out of the fabric if you try to gather the fabric around the stake to pull it out of the soil, but I doubt wind force would be enough to pull out the plastic grommets. In a few places we put tape on the fabric (to prevent tears) and used "Orbit DripMaster 65731 1/2-Inch to 5/8-Inch Loop Stake" we ordered from Amazon to anchor the fabric. This worked well and did not pull out as readily as the plastic stakes. In any case remember to ANGLE the stakes so the pull of the fabric is working on the stake laterally and not in line. One other thing to keep in mind is the weight of water because if the fabric is pulled across several small shrubs, for example, water collecting between them may weigh enough to pull adjacent stakes out of soft bedding soil. It is better to leave a little slack in places and live with the fact the fabric will raise and lower with the venturi effects of the wind passing over (like a fabric convertible top). I took off one star for the grommets being a little too easy to pull out. Other wise, we were very happy with the product.