We have a great surprise for you guys. Usually the Event Faq's were posted after the event starts, but as a early gift with the occasion of Farmerama second Birthday we managed to get our hands on the faq sooner, so you can familiarize with the event tasks in advance.
Some info could be updated if needed when it goes live.
2nd Birthday Event

from January 19th, around 2pm CET
until January 25th
check the OA's and the ingame timer.

From level 3, you can access the event, by clicking on the Event Place in the City:

There will be 2 new crops: aubretia & begonia

At beginning of the event 10x begonia and 10x aubretia will be booked automatically to each player.
These crops will NOT be available for purchase in the Seed Shop.
If you donate ALL your crops to the event, you'll need to wait for the automatic replenishement (topping up to 5 seeds) roughly every 4 hours.

Both event crops:
Time: 3 hours
EP (2x2 plot): 30

Yes! You can grow these event crops on all your lands, including the Island

Yes! When harvesting your farms you'll get 2 drop items: Cupcakes and Horns

You can see how many you have found by looking in the barn under "other", or also on the event pop-up itself (in the top corners)

• A left part, to donate begonias and horns, with a Band Reward
• A right part, to donate aubretia and cupcakes, with a Buffet Reward
• A central 'Loyalty prize' when both other parts are finished

These amounts (on the charts below) are the crops/drops required for each level, not a running-total.
In total: you need 14500 begonia, 14500 aubretia, 600 horns, 600 cupcakes.

Left side quest:

Prize Item: Upgradable Band
size 1x2

base: Woolly, the one-lamb band - 70 EP / 14 h
base +1 upgrade: The serenading singer - 135 EP / 12 h
base +2 upgrades: Groovy Sheep Duo - 150 EP / 10 h
base +3 upgrades: Swinging Sheep Trio - 225 EP / 12 h
base +4 upgrades: Birthday band - The 'Bleatles' - 335 EP / 14 h

• right side quest:

Prize Item: Upgradable Buffet
size 1x2

base: Mouthwatering Buffet - 75 EP / 15 h
base +1 upgrade: Hearty Buffet - 140 EP / 13 h
base +2 upgrades: Exquisite Buffet - 165 EP / 11 h
base +3 upgrades: Extravagant Buffet - 245 EP / 13 h
base +4 upgrades: Delectable Buffet - 355 EP / 15 h

- - - - - -

When you complete BOTH parts of the Quest,
you'll be awarded (on the pop-up)
the last prize items,
plus,
the Event Sticker:

Visible in your Sticker Album (Post Office building)
you might need to move the stickers around to see this one.

and...

you'll get the special reward Loyalty Package
The loyality packages are calculated individually for every player on the day when s/he finishes both quests.
Which package the player will receive depends on the date of his/her registration (how long you have been playing Farmerama, hence the "Loyalty Package").

Yes, by clicking the blue icon it will show you how much it will cost, depending on how many crops/drops you have already donated.

• each drop item costs 2 BB
• 10 crops cost 1 BB

They can be gifted to/from neighbours/buddies.

You can send 5 free gifts per day (7 with the skill tree rune).
After that they can be sent for a few BBs (Horn: 2 BB ; Cupcake: 3 BB)
You can receive up to a maximum of 20 gifts per day

They can be bought in the Supply Store.

Horns

• Individual Horn
• Horn pack (50 pcs.)
• Horn pack (100 pcs.)
• Horn pack (150 pcs.)

Cupcakes

• Individual Cake
• Cupcake pack (50 pcs.)
• Cupcake pack (100 pcs.)
• Cupcake pack (150 pcs.)

Yes!
They will all be exchanged for 20 CC + 20 EP each (several hours after the end of the event)

Yes!
As soon as we know what the new stats will be, we'll keep you informed.