Process in Photoshop
To process an image and remove any red casts, first open it in Camera Raw and fix the white balance by clicking on the foliage with the White Balance tool. Next, open the image in Photoshop, click the Create New Adjustment Layer button in the Layers panel and choose Channel Mixer. Select the Red channel in the dropdown at the top and set Red to 0, Green to 0 and Blue to 100. Then select the Blue Channel and set Red to 100, Green to 0 and Blue to 0. You can then go on to boost contrast, dodge and burn and make any other changes you like to enhance the image.