Forsythia sp. (Forsythi)
Botanical name: Forsythia sp.
Common name: Forsythi
Family: Oleaceae
USDA Plant Hardiness Zone Map
The flowers are produced in the early spring before the leaves, bright yellow with a deeply four-lobed flower, the petals joined only at the base.
Link to this plant:
https://toptropicals.com/catalog/uid/forsythia_sp.htm