Tag Archives: hydrangeas

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My Hydrangea isn’t Flowering – HELP?!

A question we get asked a lot is: “Why aren’t my hydrangeas blooming?” Kathy, the host of Georgina Blooms, also gets asked this question a lot – so she asked if we’d do a show with her to teach everyone how easy it is to get your hydrangeas to bloom!

There could be many reasons such as, not enough light, too much light, not enough fertilizer, too much fertilizer, not the right fertilizer, BUT quite often it comes down to PRUNING!! – an easy fix!

How and when to prune hydrangeas. Each cultivar is slightly different so, here it is, all in one spot, easy to follow!!

 

Hydrangea arborescens

These hydrangeas form their flowers buds in the late spring to early summer.

Prune in late fall, winter or early spring. They respond well to being cut back to about 4″ – 10″ above the ground.

georgina garden centre features annabelle hydrangea shrubs

Cultivars:

  • Annabelle
  • Incrediball
  • Invincibelle Spirit
  • White Dome

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Hydrangea macrophylla

Big Leaf Hydrangeas typically do not require too much pruning. If you would like a tighter plant or keep it a shorter size, keep reading!

The flower buds form later in the summer for next year’s blooms. The best time to prune it is right after it blooms, from mid-July to mid-August – no later – this gives it time to set bud for next year before the winter hits. Selectively prune out any dead stems, or old non-flower producing stems in the spring after it has leafed out.

georgina garden centre features hydrangea let's dance shrub

Cultivars:

  • Candlelight
  • City Line Mars
  • City Line Paris
  • City Line Rio
  • Bloomstruck
  • Blushing Bride
  • Endless Summer
  • Everlasting ‘Ocean’
  • Everlasting ‘Opal’
  • Everlasting ‘Harmony’
  • Everlasting ‘Garnet’
  • Everlasting ‘Revolution’
  • Forever and Ever
  • Forever Pink
  • Glowing Embers
  • Let’s Dance Rhapsody Blue
  • Let’s Dance Moonlight
  • Let’s Dance Big Easy
  • Let’s Dance Starlight
  • Let’s Dance Diva
  • Light O Day
  • Masja
  • Merritt’s Beauty
  • Nikko Blue
  • Next Generation Red Sensation
  • Next Generation Pistachio
  • Sweet ‘n Salsa
  • Tellers Blue
  • Tiny Tuff Stuff (actually a Hydrangea serrata, however, they have the same pruning techniques)
  • Tuff Stuff (actually a Hydrangea serrata, however, they have the same pruning techniques)

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Hydrangea paniculata

They bloom on new wood and are best pruned in late fall.  Some choose to prune in the early spring so they enjoy the dried blooms over the winter – just make sure you get out there early!! They are very tolerant of hard pruning, in fact cutting the plant back from 1/2 to 1/3 of it’s size will result in larger flowers. Some selections, such as Limelight, make an beautiful hedge.

Cultivars:

  • Bobo
  • Bombshell
  • Fire and Ice
  • Firelight
  • Limelight
  • Little Lamb
  • Little Lime
  • Little Quick Fire
  • Pee Gee
  • Phantom
  • Pink Diamond
  • Pinky Winky
  • Silver Dollar
  • Snow Mountain
  • Sweet Summer
  • Quick Fire
  • Unique
  • Vanilla Strawberry

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Hydrangea anomala

No need to prune – May need to train it on a tree or a wall

georgina garden centre features climbing hydrangea vines

Cultivars:

  • Moonlight
  • Miranda

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