'sneeuwklokje' or snowdrop
learned that already in kindergarden... besides I see them coming up first every year..

Plants flowering in spring is a Eurocentric concept. Only the introduced European plants flower in spring here. The natural Australian plants only flower after a good rain.

Well, "here" being relative, and having no universal knowledge of flora, I'll go with describing my hometown again as that's where I spent most of my life. (I've also noticed that wildflowers are very hard to locate in the place I now live. This makes no sense because the town is on what seems to be the more fertile side of the mountains. ???) Purple Camus seems to be the first, probably because it is hardy and thrives on the harsh plains. Most of the other flowers are in the mountains a few miles away and it takes a little longer for the mountains to thaw out after winter.

daffodils

I really don't know for sure, because the first bloom is really dependant on moisture, not temperature or lack of frost. And there are far too many that bloom at the same time. At work the Globe Mallow always seems to do well.

I suspect a lupine or poppy. I usually see poppies early in spring, in parks and personal gardens.

roses

The wild flower that blooms earliest in the spring where I live is the lady slipper.

Usually, the first to bloom in the lower elevations is the buttercup. As spring moves up the mountains you will find Pasque flowers, dogtooth violets and arnica's among the earliest. You can purchase or borrow from the local library a flower identification book that will have many other interesting facts about the foliage in and around the area.

The first flowers are typically on the forsythia (sp)bushes, but you asked for wild flower and that is a tossup between crocus' and daffodils ( the ones that are left over from old homesteads, not the ones if folks front yards.)

No idea. The University of British Columbia Botany Dept probably does. A man just down the street works there (he almost ran me over this morning); maybe I could ask him.

I'm really terrible with plants. I wouldn't know where to start answering this. I'd probably head to the library and look up a field guide for the region.

In the lands north of San Francisco, where the grapes are stomped and drunk, I'm looking out on a sea of yellow (mustard) and emperian (bluebell) blossoms. About a month early this year.

Snowdrops are usually first to arrive on the South coast of England.

Around Wisconsin the earliest flower is skunk cabbage. How do I know... ask the naturalist at the local nature center or better yet, take a hike in a state forest.

viola glabella
trillium
anemone

Tiny yellow violets, trailing arbutus (Mayflower), trillium, trout lily. In gardens: crocus and snowdrops.

I once saw a map of the advance of spring in the US, but I don't remember where. Anyone?

The first native bulbs to flower here are the lady slippers.

If you live in Texas, see the Lady Bird Johnson Wildflower Center.

enature.com

Poppies. And lupine. Oh, and indian paint brushes.

1. Look around
2. Ask a hay-fever sufferer
3. Go to a local nursery/garden centre
4. Google it

I have no idea. I'm urban. If I needed to know, I'd Google it for NJ DOT, because it plants wildflowers along highways. That would lead me to a discuss with wildflowers, which would probably give me pointers to specific state wildflower seasons.