YES. You will not only find jobs in private but government sector as well.
The knowledge of plant sciences is essential for development and management of forests, parks, waste lands, sea wealth etc.
Few of the industries which one can work with are:

Chemical Industry
Food Companies
Arboretum
Forest Services
Biotechnology Firms
Oil Industry
Land Management Agencies
Seed And Nursery Companies
Plant Health Inspection Services

The pay scale depends on qualification, designation, experience and skills of an individual.
On an average one can expect Rs 15,000 to Rs 25,000 per month and will only increase with advent in time and experience.
Good luck.