Phlox bifida 'Pettycoat' Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox divaricata 1 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox divaricata 2 Lund Bot Garden 100521 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox divaricata 3 Lund Bot Garden 130619 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox divaricata 4 Lund Bot Garden 130515 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox drummondii 2 Bergianska, Stockholm 040930 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 1 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 1 Res. Nac. Yerba Loca E of Santiago, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 2 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 2 Res. Nac. Yerba Loca E of Santiago, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 3 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 3 Res. Nac. Yerba Loca E of Santiago, Chile 171109 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 4 Gorman Hills, CA 130409 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 7 Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 8 Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox hoodii 1 Lund Bot Garden 160520 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox hoodii 2 Lund Bot Garden 160520 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox paniculata 2 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox paniculata 3 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox stolonifera 1 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox subulata 1 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox subulata 2 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox subulata 3 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox subulata 4 Copenhagen Bot Garden 130516 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox drummondii 1 Bergianska, Stockholm 040930 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 5 Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox gracilis 6 Julian, CA 130422 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox paniculata 1 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox stolonifera 2 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox stolonifera 3 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Phlox subulata 5 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).