Can't tell from your posting if you planted more than one seed and some of them came up as Venus fly traps.

The plant above is a sunflower. Did the seeds look similar to sunflower seeds?

The word venous applies to blood vessels.

Looks sunflowerish to me too.

Since Venus fly trap seeds are as small as ground black pepper, the seed of the plant you have would have had to been much bigger. What was the size of the seeds you planted?

I had about 12 tiny seeds that I scattered around the soil and only this came up.

And I know what sunflower seeds look like because I am growing them in the garden and no way was this the same. Thy were absolutely tiny.
And sunflower leaves as smooth and mine looks like they have tiny hairs, they are definitely not sunflowers although the shape is pretty similar.

This post was edited by Kat1111 on Mon, Jul 14, 14 at 6:55

Well, you may have planted Venus fly trap seeds, but this is not that. Some other seed must of been introduced either in the soil or by other means.

Sunflower foliage does have hairs.

That really does look like a hydrangea, Kat. Having said which, I suppose there are many plants unknown to me which could look like that. Do let us know if you find out. If it is a hydrangea, they are very thirsty plants. That might be a clue.