Hagrid's Garden Help!!???

Where did you find the asphadel? That's the only one of the 3 that I haven't found. You need the spongify spell to find the bark. There's a spongify symbol on the gound that will bounce you up to that area. I'll have to check on the location of the 3rd ingredient. I think you need that unlocking spell to get it. Sounds like you just need to get your spells first and then come back to the garden again later in the game.

the asphadel is behind the waterfall

to get the first three spell use the light spell near the back wall near the stairs, push on the wall. Go to the waterfall on top [you need to put the three impus in the tree hole and light the thing in the building. Green steps will come up. Go behine the waterfall and the blue plant is in there.] Next you need the key spell to get into the door inside the building where you get the glass jars and need the light spell, look on the left side. Once it's open go into a glass shed and the plant is in there. Next you need the spring spell to get the third plant. it's on the outside to the top of the door to get the first tow plants. Hope that helps.

You have to hit the gargoyle with the lumos spell before the stairs appear