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4 answers

Are you pruning them? Hydrangea bloom primarily at the tips of the stems on last year's growth, so if you are cutting off that growth, you are also taking the next year's blooms out as well.

You didn't say where you live, or where they are planted. So generally, they like shade or cool sun. I live in the Pacific Northwest--hydrangea heaven and have a hydrangea hedge that is primarily in the shade. The end of the hedge gets full afternoon sun--it tolerates it only if I water that section almost daily in the summer. They really need a lot of water in the summer--don't let them dry out. If you have them in really heavy soil, if they are in full sun or allowed to dry out then they might be protesting.

I hope that helps.

2007-02-06 10:22:27 · answer #1 · answered by Bluestocking88 2 · 1 0

I'm assuming you plantied these Hydrangeas, did you add time released fertilizer to the soil when you planted them, if not then you need to fertilize them this year, you can buy a hose end sprayer for with fertilizer included, read directions and fertilize by hand. When you do this it is important to make sure the water actually reaches the roots, so you can't just give it a quick splash, give it a good watering for at least 15 -20 minutes. You have to soak the ground, aim the hose on the ground not the leaves, do this first thing in the morning and do not water your hydrangea in the afternoons or at night. You may need to do this every fourteen days and don't quit when the blooms start coming on. You can cut some blooms off after they start to fade, this helps the root system and keeps the spent blooms from going to seed. Depending on where you live, wait until you know frost and freezing weather is over. Hydrangeas in the south do well in partial shade. Early morning sun, afternoon shade, Hydrangeas are prone to powdery mildew and leaf spot, this is why you do'nt water in the evening, or in the heat of the day you can burn the leaves with the over spray of your fertilizer water. This may sound complicated, but it really is'nt. Your plant will reward you if you follow these rules. HAPPY GROWING!!!!!!!!!!!!!

2007-02-07 07:52:17 · answer #2 · answered by watergoddess53 4 · 0 0

Improper pruning is the major cause of hydrangeas not blooming. Some hydrangeas bloom on new wood, some on old wood, and some on both. So, the type you have determines when you should prune. If you prune at the wrong time, you'll be eliminating the next season's flowers.

Generally, hydrangea species that have white or greenish flowers (like oakleaf hydrangeas and the new 'Limelight') bloom on new wood. So, you can prune them anytime after the season's bloom ends and into the fall or very early spring. Hydrangea species that have blue or pink flowers usually bloom on old wood, so prune these just a little and immediately after blooming - if at all. Then there are the wonderful new blue and pink "everblooming" hydrangeas like 'Endless Summer.' They bloom on both old and new wood, so they can be pruned at any time and still have a great flush of bloom.

2007-02-07 07:26:09 · answer #3 · answered by Sharon 2 · 0 0

My ex- told me (so I am not responsible for the outcome), that Hydrangea bloom to reproduce next generation, so if you put too much fertilizer, then it thinks it doesn't need to reproduce, so it will not bloom.

2007-02-06 16:53:01 · answer #4 · answered by paobay 4 · 0 0

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