What is Pushkala Yoga as per Vedic astrology?

Pushkala Yoga:

The lord of the sign occupied by the Moon (who should be associated, with lord of Lagna) should be in a Kendra or in the house of an intimate friend aspecting Lagna and at the same time, Lagna should be occupied by a powerful planet.

As complicated as it sounds it is easy to simplify it using 3 basic rules

Ascendant lord (ruling planet of 1st house) and Moon should be in the same sign
The ruling planet of the sign where Moon is located should be in a friendly sign or quadrant and should aspect the ascendant. So, if Moon is located in Pisces in the tenth house then lord of Pisces which is Jupiter should be located in seventh house and aspecting ascendant.
Last condition is the first house or ascendant as it is called should have a very strong planet.
Pushkala Yoga in actual practice is full of significance, as it comprehends that Lagna, the lord of Lagna, the Moon and lord of Chandra Lagna should all be powerful.
This yoga will not be applicable to Cancer Ascendants who have placement of Moon in first house(ascendant).
Example of Pushkala Yoga;

This yoga bestows the native with wealth, fame, sweet speech, honored by the King and a lord. S/he has refined speech and is honoured by the government.

All conditions are near impossible in a horoscope. But even if some of the rules comply in a horoscope it is a great thing to have. A strong planet in first house like exalted Jupiter could ward off all other problematic combinations in horoscope, an exalted Sun in first house could bless native with health and leadership qualities, an exalted Saturn in first house produces a great leader while an exalted Mars produces an achiever who is worshipped by masses. Moon and ascendant lord in same sign suggest synchronization of mind, emotions and body.