For really easy covers, I use the plastic boxes from lettuce. I then anchor them with a rock. Very easy if you have no building skills. You can keep them on easily. If it's really cold, you can cover all of them with a large sheet of plastic. I save the boxes all winter. Another trick I did last year, was use half an eggshell filled with seed mix. I planted the tomato seeds in this, put them directly in the ground and covered them with a box. Had great tomatoes, even though I planted in late May. Protected them from a late frost and I didn't have to transplant. So no shock to the plants. Like little mini greenhouses. Put the drip line to each one.
For really easy covers, I use the plastic boxes from lettuce. I then anchor them with a rock. Very easy if you have no building skills. You can keep them on easily. If it's really cold, you can cover all of them with a large sheet of plastic. I save the boxes all winter. Another trick I did last year, was use half an eggshell filled with seed mix. I planted the tomato seeds in this, put them directly in the ground and covered them with a box. Had great tomatoes, even though I planted in late May. Protected them from a late frost and I didn't have to transplant. So no shock to the plants. Like little mini greenhouses. Put the drip line to each one.