The newly-enlarged company is operating from a single 30,000 sq ft site in Caversham, Reading after Conservatree moved its entire business, including staff and equipment into the premises.
Although Conservatree will retain its brand name, the company becomes part of the Herald Chase Group, which now employs a total of 50 staff.
The merger was several years in the making with Conservatree previously operating in premises let by Herald's managing director Nigel Elkes.
For the time being, Elkes and Conservatree managing director Chris Goslar take on joint managerial roles within the business.
Goslar said that in addition to giving customers a wider range of services, Conservatree staff will benefit from "being part of a stronger organisation that is well placed to enjoy future success and growth".
The larger business has a broad offering that spans direct mail, creative services, mailing, web-to-print, digital and litho printing as well as finishing.
It operates a range of Heidelberg and Ryobi litho presses as well as HP and Xerox digital printers in addition to in-house finishing equipment.
"We believe that having one central point of contact for so many services will prove a huge benefit to our customers, saving them time and money," said Elkes.
According to Goslar, the group, which is on target for a £6.5m turnover this year, is targeting the £10m mark by 2012.
He said: "Our customers can benefit from a broader product offering and a wider knowledge base. With a greater range of services, we are well placed to grow.
"As a business, we have a plan to succeed not a plan to avoid failure."
Customers served by the group include B&Q, Comet, Thames Water, Enterprise, BSI, Scottish & Southern and Wincanton Logistics.