Budha Puja or Mercury Puja is dedicated to planet Mercury. Budha Puja on Wednesdays brings in manifold benefits like eliminating difficulties, healthy progeny, possession of fertile lands etc. Following things are associated with Buddha- the Mercury:

Direction :	Northeast
Gemstone :	Emerald
Metal :	Alloy of Metals
Ruling Day :	Wednesday
Flower :	White Kanthal
Color :	Green
Associated No. :	4 (Four)
Grain :	Full Green Moong Daal
Food :	Rice Mixed With Moong Daal
Dhyan Mantra :	Priyangu Kalikas Yamam Rupena Pratymam Budham Saumyam Saumya Gunopetam Tam Budham Pranamamyaham

Mercury is known as Budha in Vedic astrology. Budha is known as ''Grahapati'', or lord of the planets. Budha is considered wisest among the planets. Nature of mercury is Airy. Mercury refers to the intellect and intellect comes from mind.

Budha Puja - Worship of Mercury
Worship of Mercury is recommended to those who are weak at studies, find lack of concentration and suffer from blood pressure and sugar problem etc. Reciting this mantra will help to minimize the evil influence of afflicted Mercury.

Aum hram krom aim grahanathaya budhay savaha
One can recite the following mantra on Wednesdays, facing the northeast direction. It is advisable to wear green clothes on such day.

Position of Budha
Mercury rules over two signs of the sidereal zodiac, Gemini and Virgo. Budha exalts in Virgo and falls in the sign of Pisces. Mercury is most comfortable in the 1st house.

Mercury - Its Significance
The planet Mercury or Budha rules nerves, air, cells, tongue, breath and the nervous system. Afflictions to Budha can cause problems like nasal disorders, impediments in speech, stammering, bronchitis, asthma, brain fever, delirium, breathing difficulties, paralysis, and nervous disorders. Budha represents speech, communication and commerce on all levels. In the other function, Budha manages material resources.