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@MarkCullen4 January 8, 2020

Impressed by all the new tech at #LOcongress also always enjoy catching up with friends in the business… twitter.com/i/web/status/1…
@MarkCullen4 January 2, 2020

Help save Toronto's oldest tree. Toronto.ca/donate twitter.com/cityoftoronto/…
@MarkCullen4 December 31, 2019

The January issue of Gardening with Mark and Ben is available now. Happy New Year! conta.cc/2F4Szme https://t.co/8RZEDQpUyt
@MarkCullen4 December 21, 2019

This week in @TorontoStar , our Christmas wishes How climate change, bugs and good compost inspire our Christmas wi… twitter.com/i/web/status/1…
@MarkCullen4 December 4, 2019

Don't miss this one- a brand new podcast! twitter.com/green_for_life…