The Hempire Cup is a multiplayer event where players compete to produce the highest quality strain. You will be able to register and create your own unique strain to participate in the current or upcoming Hempire Cup. Once the competition begins you will receive a starting set of 18 special tournament Epic Buds, and can earn more by completing deals in the Weed on Wheels and increasing their Sales bonus level.

You will have up to 48 hours to use the breeding lab to combine your Hempire Cup epic buds with the epic buds in your collection, increasing the quality rating of your Cup buds. The higher the quality, the higher the score in the Hempire Cup! When the competition ends, you  will be listed according to your bud's ratings. The higher your rating, the better your placement, and the greater your rewards! By doing exceptionally well, you can earn Hempire Cup gems which will lead to unlocking higher leagues of Hempire Cups and give you a shot at even better rewards!

The top player for each Hempire Cup will have the unique strain they created unlocked as a usable strain for them and all players who participated in the Cup with them. These unique strains can be grown in the second greenhouse that is found across the street from your first greenhouse. If your second greenhouse is not available yet then continue completing quests for your Uncle and it will become available as part of the main story before too long.

The key to performing well in the Hempire Cup is to level up the quality of your strains. When you level up the overall quality of each strain in the single player it increases the breeding results in the Breeding lab.

i.e. A level 3 quality Afghani will give you a bigger bonus than a level 1 quality Afghani.

The second strategy is to use the right type of strains. There are 4 strain attributes. Potency, Aroma, Pain, and Mood. All strains have Potency and Aroma, however they only have either Pain or Mood.

So the best strategy would be to use sativas with sativas, and indicas with indicas. Note however you will sometimes need to combine them to get the best results, but in the end you will need to use the same type to get the remaining attribute.

Legendary buds are like super strains. They can level up all 4 attributes.