in the following description , color references are made to the royal horticultural society colour chart , 2007 edition , except where general terms of ordinary dictionary significance are used . plants used for the description were approximately two years old and were grown in 11 . 8 l containers under 50 % shade under outdoor conditions in watkinsville , ga . colors are described using the royal horticultural society colour chart ( r . h . s .). botanical classification : hydrangea quercifolia bartr ., cultivar ‘ piihq - i ’. parentage : female , or seed , parent : an unnamed , unpatented selection of hydrangea quercifolia . male , or pollen , parent : unkown ( open - pollinated ). propagation : stem cuttings . time to initiate roots , summer : about 28 days at 32 ° c . plant description : deciduous , flowering shrub ; compact , rounded to spreading growth habit . freely branching ; pruning enhances lateral branch development . root description : numerous , fine , fibrous and well - branched . plant size : the original plant , now about 5 - years - old in the ground , is about 132 cm high from the soil level to the top of the inflorescences and about 157 cm wide . first year stems are stout and have a diameter of about 5 mm . shape : round . pubescence : tomentose . second year and older stems have a diameter of about 6 mm or more . shape : round . trunk diameter : 3 . 9 cm at the soil line . color : n199d . internode length : about 4 . 3 cm . first year stem color ( young ): 166d . color ( woody ): 200d . second year and older stem color : 199d . bark : exfoliates in papery strips or sheets beginning on second or third year stems . vegetative buds : opposite in arrangement , imbricate , 4 to 6 scaled , divergent , tomentose . color : 166d . size : lateral buds about 3 mm in length and 2 . 5 mm in width , terminal buds about 1 . 7 cm in length and 8 mm in width . foliage description : arrangement : opposite , simple . length : about 4 . 5 cm . width : about 2 . 8 cm . shape : roughly ovate in outline , usually 5 lobed , often the 5 main lobes are subdivided at the apex into 2 or 3 smaller lobes . apex : acuminate . base : truncate to subcordate . margin : serrate . texture upper surface : glabrous , sparsely pubescent . texture lower surface : tomentose . venation pattern : pinnate . veins covered with tomentose pubescence on upper and lower surfaces . venation color of emerging foliage ( upper surface ): 191a . venation color of emerging foliage ( lower surface ): 192a . venation color of fully expanded foliage ( upper surface ): 164b . venation color of fully expanded foliage ( lower surface ): 162b . color in developing foliage ( upper surface ): 191a . color in developing foliage ( lower surface ): 192a . color in fully expanded foliage ( upper surface ): 147a . color in fully expanded foliage ( lower surface ): 191b . fall color : n34b , 187b , or any combination of these colors . petiole length : about 6 cm . petiole diameter : about 4 mm . petiole color ( upper and lower surfaces ): n199d . pubescence : tomentose . flower description : flowers are produced from about may to june in watkinsville , ga . an inflorescence remains showy for about eight weeks as the flowers open white and eventually age to pink over this period of time . an inflorescence contains about 600 individual fertile flowers . an inflorescence contains about 70 individual sterile florets . inflorescences possess a faint , sweet fragrance . inflorescence type : panicle . inflorescence length : about 23 cm . inflorescence width : about 10 . 6 cm . peduncle : about 21 . 5 cm in length , about 4 mm in diameter , color is 166d , with tomentose pubescence . pedicels : about 4 . 2 cm in length , about 1 . 5 mm in diameter , 144c in color , with very fine pubescence . fertile flowers : flower buds : about 3 mm in length , about 2 mm in diameter , and 157a in color . individual flowers : about 3 mm in height and 2 mm in diameter . petals : none observed . stamens : usually 6 per flower , 2 . 5 mm in length , 0 . 5 mm in width , and 157d in color . anthers : about 0 . 5 mm in length , about 0 . 5 mm in width , 149d in color . pollen : 155d in color , produced in small quantities . pistil : superior , about 3 mm in length , about 2 mm in width , and 157d in color . stigma : about 0 . 5 mm in diameter , round in shape and 157d in color . style : about 1 . 5 mm in length , tubular in shape , and 157d in color . ovary : about 1 . 5 mm in diameter , round in shape , and 157d in color . sterile florets : sterile florets are about 3 cm in diameter . each floret contains 4 sepals about 1 . 5 cm in length and about 1 . 5 cm in width . sepal shape : broad ovate to rounded with obtuse apex , acute base , and entire margin . texture : smooth with no pubescence . color at maturity ( upper and lower surfaces ): nn155b . color of aged sepals ( upper and lower surfaces ): 38b . fruit : type / appearance : dehiscent , rounded capsule . length : about 2 mm . diameter : about 2 mm . color : n200a . each capsule contains many seeds that are tiny , dust - like , and 200c in color . disease / pest resistance : plants of the claimed hydrangea variety grown in field and container trials have exhibited resistance to leaf spot .
a new and distinct cultivar of hydrangea quercifolia plant named ‘ piihq - i ’, characterized by its compact , rounded to spreading growth habit ; strong stems , even when young , resulting in higher quality finished container plants for the grower ; dark green disease resistant foliage ; reddish orange to reddish purple fall color ; full , white inflorescences that age to light pink and are held upright on the plant .