There are four main type of petunia plants : Grandiflora , Multiflora , Milliflora , and Spreading ( Wave ) . All four are readily available in series , which are group of plant with unvarying size and flowering habits . The only motley feature is the range of colour of different petunia flowers within each series .

Grandiflora Petunia

Grandiflora are one-time Petunia Varieties that were create in 1950s . They produce single or double flowers that each is up to 5 in in diam . Some grandifloras have a cascading or trailing form , make them well - accommodate for window box and hanging pots . Others grow in dim mounds reaching 12 to 15 column inch tall . Their bloom may be pink , rise up , puritanic , whitened , yellow , salmon or combinations of these colors in stripes .   These plants are not very liberal of operose pelting and can become scraggly at the end of summer if they are n’t pinched back . Although their flowers are telling , Grandiflora petunia tend to produce few bloom than some other , modest - flowered type .

Grandiflora petunias serial include :

Multiflora Petunia

Multiflora petunias bring forth a large turn of flowers , although the single prime are somewhat smaller than those of the grandiflora petunias . Each flower reaches about 2 inches in diameter . The flowers may have one or two sets of petals and serve as color accents in a garden bed . Multiflora petunias are more compact than other variety of petunias and can withstand steer and hard rainwater better than grandiflora varieties . Multiflora petunias require filch back when they give about 6 inches improbable . Because of their mounding wont , multiflora petunias are a better choice for garden bed than grandifloras and they shape very well in container .

Popular Multiflora petunias include :

Milliflora Petunia

Millifloras also cite to as intercrossed millifloras , are midget plant that ordinarily grow no taller or wide than 8 inch . They produce peak in copiousness , but their flowers are smaller than those of other varieties , normally only about 1 1/2 inches in diam . They require no pinching back or pruning , growing naturally in a compact shape . Milliflora petunias acquire flowers in most colour except yellow . They are splendid alternative for container , hang baskets and window boxes .

Milliflora petunias let in :

Ground Cover or Wave Petunia

Ground cover Petunia , also called spreading petunias or Wave Petunia , arise only 6 inches tall but can circularise more than 4 foot in one get time of year . They thrive on water system and hebdomadal fertilization . These flora work well as a ground cover but also in window boxes , cascading over wall and in hanging baskets . They do not need pinch back , but absent their spend peak can make them look more attractive than they would otherwise . Flowers on Wave varieties are pinkish , lilac , red , rose , burgundy or purple , with some blossom decorate with darker , contrast stripes of complemental colouring material . Wave petunias make wonderful groundcovers and poke for container .

Wave genus Petunia include :