The exhibition is being held under the auspices of Parks and Horticulture Department.
The State Minister also visited stalls of different verities of autumn flowers.
The exhibition will continue till Thursday.
Later talking to Media Minister of State for Information and Broadcasting Marriyum Aurangzeb says that the country cannot afford the politics of allegations and unrest.
The State Minister said Prime Minister Nawaz Sharif has made Pakistan a progressive and better country by lodging war against terrorism. She said terrorism in Pakistan has reasonably been eliminated, which is evident from the fact that now people are turning to public parks without any fear.
Marriyum Aurangzeb says the fight against terrorism will continue till complete elimination of the menace from Pakistan.
She said Nawaz Sharif gave gifts of mega projects to the people of Pakistan, which include motor ways, making the country a nuclear power, better health facilities through health insurance.
The State Minister said PML-N government gave the gift of metro bus to the residences of twin cities. She said the Prime Minister has also announced establishment of 26 hospitals across the country and the metro bus service in Karachi.