My trees/bushes are already blooming but this week its supposed to snow in Denver. Will it harm the plants?

Possibly is really the best answer. Temperature affects what type of snow you will get. Ground temperature will also play a part. The thing to worry about is ice. If there is likely to be ice your trees could lose their blossoms, which will keep them from flowering or producing fruit.

Snow generally will not hurt all the blooms but may stunt the growth of some.

From personal experience, we lost most of a fruit crop 2 years ago during an Ice storm, the tree was just coated. Snow has never impacted the trees like that, the snow also provides water and moisture for the root system.

If they are smaller or bush style trees, you could cover them. If they are larger, have a pole handy and shake the branches to clear off some of the snow. LOOK out for over head lines and lines that may run through the tree.

If you have a local county extension office you could check with them and they could give you some ideas. Link below to Extension office.

Hope this helps.

Yes... possibly.

When you say "in bloom", do you mean there are flowers already appearing, or just that the leafs are beginning to appear? If they're already in bloom a heavy snow or hard frost could kill off the blossom. Aside from saying bye-bye to the blossom, it would also mean no fruit for any fruit trees/bushes.

To play it safe I'd cover it with horticultural fleece until the snow has passed. You should be able to pick this up from any garden supplies store, particularly given your location, I would imagine late frosts are a common issue.

Here's an example so you know what you're looking for: http://the-plant-directory.co.uk/images/garden-fle... - that's a roll, but you can also buy fleece bags too, to pop over any shrubs. If you're worried about beds of plants, if the plants aren't hardy, you can cover them with fleece - just use canes/bricks/anything to keep the fleece raised above the plants (and make sure it doesn't end up crushing them under the weight of the snow.

It will not likely harm the plants but it might kill the flower buds leaving you with no flowers this spring. Trees and bushes are much hardier than you think and can very often bounce right back after a cold spell. I would not worry.