The conferences have been organised by the HTA through its Greening the UK campaign to push for more planting in development schemes.
The first event, aimed at those involved in planning, will take place at Manchester Town Hall on Friday 17 September. It will include presentations on emerging Government policies relating to green spaces and discussion on the effect of decentralising powers to local authorities and communities.
The second event, for builders, developers and housing associations, will take place at the BRE Enterprise Hub for the Built Environment, Watford, on Monday 4 October. It will address how green spaces and planting can help meet the challenges of the Code for Sustainable Homes and make development sites more resilient against the effects of climate change.
Chair of Greening the UK and HTA head of business development Tim Briercliffe said: "The events planned this autumn take the campaign to the next level and demonstrate to planners, councillors, masterplanners and developers the social and environmental benefits of enhanced green planting and, critically, how to implement the vision.
"The events will use case studies to show the audience what can be achieved, using quality green landscaping, and how to do it. The events also aim to demystify planting and demonstrate why maintenance need not put them off."
Both conferences will include presentations from key stakeholders including the Planning Officers Society, the BRE, the Landscape Institute, MacFarlane Wilder, the Environment Agency, the University of Reading and CABE Space.