Hydrangea – Incrediball®
Native to North America
For the biggest, most abundant blooms and strongest stems, plant where it gets at least six hours of sun each day (warmer climates can get away with a bit less). A good layer of shredded bark mulch helps minimize water loss.
As for pruning, cut the entire plant back by about one-third its total height each spring, just as the new growth begins to emerge on stems. This serves to build up a strong, supportive, woody base while also encouraging abundant new growth for plenty of flowers.
If you wish to fertilize, an application of a rose fertilizer in early spring, once the soil has thawed, is sufficient.
Landscapes, naturalizing, hedges, perennial gardens. Also makes a very dramatic cut flower.
Maintenance Category Easy
Water Category Average
Blooms On New Wood
Flower Form Cut Flower, Dried Flower, Landscape
pH B - pH 5.8 - 6.2
EC (2:1 Extraction Method) 1 - 2
Fertilization 200 - 300
Light Requirements Medium, High
Water Requirements Moist to Wet
Rooting Out Temperature 65 - 72° Fahrenheit
Growing On Temperature 60 - 65° Fahrenheit
Holding Temperature 40 - 50° Fahrenheit
Planting and Timing Information
Spring to Fall Finish, 1 ppp
Pinching and Growth Regulators
Early and frequency pruning or pinching is the key to producing a full container. Can be open and leggy with out enough pruning early. Flowers on new growth so you will want to stop pruning by early June to allow flower buds to set.
Pest and Disease Management
phids, Leaf Spot
This adaptable native plant produces huge flowers (as much as 12" across) and is both reliable and beautiful. Flowers open green, then mature to white before turning green at the end of their life cycle. Very cold hardy Incrediball blooms on new growth so even very cold winters won't keep it from blooming. The flowers are held upright on very sturdy stems, so they don't flop like 'Annabelle' will. Prune back in late winter to encourage strong new growth and flowering. Flower color is not affected by soil pH. Best in moist, well drained soil but adapts to most sites.