the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

The Tilia insularis 'PROF. MARECEK' was planted in honor of former Silva Tarouca Research Institute for Landscape and Ornamental Gardening (RILOG) director Jiri Marecek to his 90th birthday in the Dendrological Garden, Pruhonice, Central Bohemian Region, Czech Republic, on July 15, 2020. (CTK Photo/Libor Sojka)

Jiri Marecek, the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

Jiri Marecek, the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

The Tilia insularis 'PROF. MARECEK' was planted in honor of former Silva Tarouca Research Institute for Landscape and Ornamental Gardening (RILOG) director Jiri Marecek (right) to his 90th birthday in the Dendrological Garden, Pruhonice, Central Bohemian Region, Czech Republic, on July 15, 2020. (CTK Photo/Libor Sojka)

Jiri Marecek, the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

Jiri Marecek, the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

The Tilia insularis 'PROF. MARECEK' was planted in honor of former Silva Tarouca Research Institute for Landscape and Ornamental Gardening (RILOG) director Jiri Marecek (right) to his 90th birthday in the Dendrological Garden, Pruhonice, Central Bohemian Region, Czech Republic, on July 15, 2020. (CTK Photo/Libor Sojka)

the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

The Tilia insularis 'PROF. MARECEK' was planted in honor of former Silva Tarouca Research Institute for Landscape and Ornamental Gardening (RILOG) director Jiri Marecek to his 90th birthday in the Dendrological Garden, Pruhonice, Central Bohemian Region, Czech Republic, on July 15, 2020. (CTK Photo/Libor Sojka)

Jiri Marecek, the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

Jiri Marecek, the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

The Tilia insularis 'PROF. MARECEK' was planted in honor of former Silva Tarouca Research Institute for Landscape and Ornamental Gardening (RILOG) director Jiri Marecek (right) to his 90th birthday in the Dendrological Garden, Pruhonice, Central Bohemian Region, Czech Republic, on July 15, 2020. (CTK Photo/Libor Sojka)

the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

the Dendrological Garden in Pruhonice, Tilia insularis 'PROF. MARECEK'

The Tilia insularis 'PROF. MARECEK' was planted in honor of former Silva Tarouca Research Institute for Landscape and Ornamental Gardening (RILOG) director Jiri Marecek to his 90th birthday in the Dendrological Garden, Pruhonice, Central Bohemian Region, Czech Republic, on July 15, 2020. (CTK Photo/Libor Sojka)