Planets and Houses in Astrology

Most of us who practice Vedic astrology would know that there are 7 concrete planets and 2 shadowy planets.

Concrete planets: Sun, Moon, Mars, Jupiter Saturn, Mercury and Venus
Shadow planets: Rahu (north node) and Ketu (south node) (magnetic poles of the Moon)
Note: Rahu and Ketu do not exists in the sky as “concrete” planets
Natural Benefices: Venus, Jupiter, Mercury (if free from any blemish from malefic planets), Waxing moon
Natural Malefic – Sun, Mars, Saturn, afflicted mercury and waning moon
Remember: Rahu and Ketu are not considered as natural malefic. They function in accordance with the sign &house they occupy, planets they associate (conjunctions and aspects)

Behaviour of planets in various houses (12, 2, 8 & 3, 6, 10, 11 & 1, 4, 7 &10^th)

Some of you would be thinking as to why 10^th house is mentioned twice in the header? 10^th house is a Kendra (quadrant) and an Upchaya (growth)

Rule 1 – Natural benefic when owns Kendra (quadrants) 1, 4, 7&10^th house – they shed some of their beneficence. It does not mean that they become malefic. Consider this distinction carefully.
Rule 2 – Natural malefic when owns Kendra (quadrants) – they shed their maleficence. It does not mean that they become benefic.
Rule 3 – Natural malefic in Upchaya houses (3, 6, 10, &11) – they help the growth of the house. Planets in upchaya house improves with time.
Rule 4 – Lords of 12-2-8 are not free in giving results. They give the effects of the planet with whom they associate. If they are not associated with any planets then they give the result of other house in which their 2^nd sign has fallen. Thus for Taurus ascendant mercury if not associated with any other planet will primarily give result of Virgo which is 5^th house. Jupiter is the lord of 8^th and 11^th house will predominantly give the result of 11th house if not associated with other planets.( Chapter 36 BPHS)