Some of the paths that are adjacent to farmland were closed to comply with MAFF guidelines in the bid to control the spread of Foot and Mouth.
"We are delighted to be able to lift these restrictions now," said Gill Farrow, visitor services manager at Colby.
"Having liaised closely with our neighbours throughout this period it has now been agreed that all the paths in the west wood garden can be opened up. The gardens are a riot of colour just now; with the rhododendrons and azaleas at their best it really is a sight not to be missed.
"We have Ingenium in the gallery this year exhibiting and selling the work of Prince's Trust Cymru artists and craft makers offering some exciting and unusual products and the Pembrokeshire clotted cream teas in the award winning Bothy tearooms are still as good as ever. The woodland garden is open daily until November 4, 10 am - 5 pm. Whether it's the safari sacks or garden quiz for children or just a relaxed stroll around the walled garden, there is something for everyone to enjoy."