New recruits include four new employees for the Yorkshire-based landscape supplier's sales and warehouse teams.
The buisiness has restructured its warehouse and production teams promoting long-standing team member Sam Jackson to production manager.
Green-tech is still recruiting and expects to have 90 employees by the end of the year.
The supplier recorded a turnover of £12.7 million in the financial year to the 30 September 2017, a 23% rise on the £10.3m turnover of the year before, and £10.7m in 2014/15.
It is aiming to reach a £20m turnover by 2020.
Chairman Richard Kay said: "We set out ambitious growth plans in 2015. The build of our business park in North Yorkshire, offices and vast warehousing facilities gave us the infrastructure needed to achieve our ambitious targets. Our growth has been planned and we are on track to reach our goals by 2020."