Have any of you successfully used umbrellas to she...

You can always set up polytunnel plastic over your plants like a tent type of thing. Allowing them to still catch some rays.

No, and I wouldn't recommend it because umbrellas are not designed to withstand high wind speeds and could end up damaging your plants if they get blown away. My best experience has been with a clear tarp stretched over wooden posts and a frame. It requires some DIY skills, but it's more durable if you use a good-quality tarp and it's also cost-effective.😊

Hello master, This will not work because of the wind. I would build a small greenhouse (at least the roof). Polycarbonate with a wooden frame will do the trick. polycarbonate with a stainless steel construction will do the trick for a few years depends on the budget. Happy Growing Buddy! 💚

Build a homemade "hoop house". PVC frame and plastic painters drop cloth.

Hey mate, Is a good point to think about a shelter, but think about a long term opportunity, like a whole blanket. Umbrellas could work, but dont secure the roots from getting damped and will get destroyed very fast is they fixated in strong wind. One Strong wind and all are trash, possibly even damaging your plant while going broke. Hope that helps you, just theory tho.👍