Specific woods used in planetary worship (grah) in astrology. In Hindu astrology, also known as Vedic Astrology or Jyotish, various planets are associated with specific woods that are used during rituals and worship to obtain the auspicious influences of those planets.

Here is a common association between planets and woods in Hindu astrology:

1. Sun (Surya): Sandalwood (Chandan)
2. Moon (Chandra): Khas or Vetiver (Usheera)
3. Mars (Mangal): Khair-wood (Khair)
4. Mercury (Budh): Durva grass (Darbha)
5. Jupiter (Brihaspati): Yellow sandalwood (Rakta Chandan)
6. Venus (Shukra): Sarso or mustard seed plant (Sarso)
7. Saturn (Shani): Shami wood (Shami) or black sesame (Tila)
8. Rahu and Ketu: Vata or fig tree (Vata)

The use of specific woods during planetary worship is rooted in ancient traditions and is believed to balance the energies of the planets and attract favorable influences. The ritual can vary, but often involves offering these woods during prayers and ceremonies dedicated to a specific planet.

It is important to note that these associations can vary depending on regional traditions and personal beliefs. For detailed and personalized guidance on astrological matters, consulting an experienced astrologer is often recommended.