On the U.S. Department of Agriculture ’s plant life hardiness zona map , Zone 8 runs from coastal North Florida and South Georgia to west , fundamental Texas and also include modest part of inland California , southerly Nevada , northern Arizona and the northerly Pacific Northwest . Temperatures may sink to 10 degrees Fahrenheit in the northern part of the zona and 15 degrees in the southerly part . geographical zone 8 has pretty mild winters , but many parts have raging , humid summertime . Hydrangeas – which have large clusters of pocket-sized , showy heyday and large bright - green parting – are pop in the mid - South . hydrangea are deciduous in Zone 8 and , in the southern parts of this zone , should be planted in dappled or partial refinement and watered oftentimes during the height of the summertime .

Mophead Hydrangea

The mophead hydrangea ( Hydrangea macrophylla ) is also known as the bigleaf , garden or lacecap hydrangea . This assortment thrives in Zone 8 . Its species is among the most popular and includes the " Blue Wave " with lacecap prime , the bivalent - floweret " Domotoi " and the " Goliath , " which has a 15 - inch bloom . Mopheads may grow to 12 feet high , though most top out around 8 feet . Flowers are available in livid , pink , crimson or naughty – though , as with most hydrangea , the blues ( acidic grime ) and garden pink ( alkaline soil ) may be changed by tinkering with the pH stage in the soil . Mophead hydrangeas should be planted in full to partial sun in the northerly part of Zone 8 and in partial tad in the southerly part . These plant life will wilt without frequent tearing during the warmest summertime month .

Oakleaf Hydrangea

Oakleaf hydrangea ( Hydrangea quercifolia ) has folio shaped like those of an oak tree and peak clustering that are elongated and resemble an upside - down cone . The leaves may be as tenacious as 8 inches and they turn bronze or crimson in the fall before dropping . This species bloom best in hot summers and does well in Zone 8 , but is hardy to Zone 4 . Among the cultivars are " Snow Queen , " which has orotund flowers , and " Snowflake , " which has extra petals . This plant can produce to 6 metrical unit and prefer some tad in Zone 8 . While oakleaf hydrangea postulate ample water , the soil should not be constantly wet .

Smooth Hydrangea

The smooth hydrangea ( Hydrangea arborescens ) is an capable flora with gray - unripe , ellipse - shaped leaves that may be up to 8 inches across . This specie , which can maturate to 10 feet , performs best in the southern part of Zone 8 and above . aboriginal to Missouri and one of the most cold - stalwart species , the tranquil hydrangea ordinarily has belittled flower than the mophead or oakleaf metal money , but it is a more prolific blunder . The works itself is looser and more woody . still hydrangea is useable in several cultivars , including the giant " Annabelle , " which has blooms of up to 12 inches across , and the " Grandiflora , " which has 6 - inch blooms . In Zone 8 , this plant should be in partial tincture with sizable water .

References

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