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photo of Franz-Xaver Rampp

Meet the Breeder

Franz-Xaver Rampp

CITYLINE® Cityline Mars

Hydrangea - Bigleaf

Hydrangea macrophylla


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Cityline Mars hydrangea blooming in the landscape showing its unique two toned blooms which are blue and white "} Closeup of the blue version of bicolor Cityline Mars hydrangea with each floret edged in crisp white Closeup of the pink version of bicolor Cityline Mars hydrangea with each floret edged in crisp white YouTube video describing the plant shown on this page
  • Unique flowers
  • Disease resistant
  • Compact habit

Tired of floppy, weak stemmed hydrangeas? So were we - that's why we introduced the Cityline® series. Developed in Germany where growth regulators are prohibited, this series of strong, compact hydrangeas also boast pure, rich colors. Cityline® Mars hydrangea is truly out of this world, with gorgeous bi-color blooms that take on pink or deep violet tones, depending on soil pH. Very handsome, high quality foliage.

5 - 9 (-20°F/-28.9°C)
Full sun, Part sun
1 - 3'
1 - 3'
Finish Time
.5 season
Bloom Time
Flower Color
White, Blue, Pink
Foliage Color
Liner Sizes
4", Quick Turn


Moist but well drained soils are best. Bigleaf hydrangeas may wilt in dry soils but also cannot take soggy conditions for any period of time. Tolerant of a range of soil pH levels, however, soil pH will influence flower color.


Avoid pruning bigleaf hydrangeas, except to remove any dead wood. These hydrangeas cannot be cut back or trimmed at any time of the year without impacting the bloom for either the current season or the next.


Bigleaf hydrangeas are classic choices for flower gardens, cottage gardens, and seaside plantings. They also make a showy addition to foundation plantings and can be used for low hedges or edging.

Growing Tips

Bigleaf hydrangeas benefit from a good layer of shredded bark mulch and afternoon shade, particularly in hotter climates. Apply a granular fertilizer formulated for flowering shrubs (like a rose fertilizer) if leaves start to yellow.