Study of Vertical Greening Application
- To carry out a review based on published literature on selection of climber species and identify suitable species for planting on wall surfaces.
- To evaluate the performance of climber species in relation to some key growth parameters, such as aspects, supporting systems, growing medium and horticultural maintenance requirements.
- To monitor the cooling effect of green wall using a combination of environmental monitoring equipment.
- VG has prominent environmental benefits specially the cooling effect. The research shows that the temperature of exterior green wall could drop by 7°C in the summer with vegetation cover.
- VG can bring significant aesthetic and ecological benefits to the surroundings and nearby residents.
Performance of Climber Species
|Greening Effect||Growth Rate|
|Grade||Species Name||Foliage Density||Flower Color||Seasonality||Inital Grow Rate||Fast Growing Species|
|E||White + Pink to Red||Semi-Deciduous||Quick||X|
|E||Orange to Red||Deciduous||Slow|
|E||Creamy White or Green||Evergreen||Slow|
- Foliage Density:
E- Species with even and dense foliage
L- Species with concentration of foliage at the lower part
U- Species with concentration of foliage at the upper part
- Initial grow rate:
Quick - Species growth up to reaching 10m or above within 6 months after planting.
Medium – Species growth between 6m to 8m within 6 months after planting.
Slow- Species of slow establishment after planting i.e. reaching less than 6m within 6 months after planting.
- Fast growing species are defining as reaching the top of tank within 18 months (i.e. ~13m)
- A and B-Grade species are highly recommended.
- C- Grade species suffering slow initial growth rate can be used where fast greening effect is not demanded and site condition are less exposed.
- D and E- Grade should be used with full understanding of their limitation.
- Twenty climber species have been tested, other than those list in the table, three more species i.e. Ficus pumila cv variegate, Hedera helix, Hedera nepalensis var. sinensis have been tested but found dead during the study period and are not recommended for external use.