Timming Lilac and Azalea

When is the best time to trim lilac and azalea bushes? Can you trim them low, as they are over 7 feet tall? I have two hydrangea bushes that are quite large but have never bloomed. How can I get them to bloom?

1 Comment (Open | Close)

1 Comment To "Timming Lilac and Azalea"

#1 Comment By Nikki On 05/22/2014 @ 4:26 pm

I would not prune either of the plants back by more than 1/3 in any one year. Cutting back any further than that could harm the plants. These articles should help: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/pruning-lilac-bushes-when-to-trim-lilac-bushes.htm ^[1], https://www.gardeningknowhow.com/ornamental/shrubs/azalea/pruning-azaleas.htm ^[2] As for the hydrangea, you may be lacking phosphorus. If there is a lack of phosphorus in the soil, plants will have little to no blooms. You can either use a phosphorus rich fertilizer or add some bone meal to the soil. These articles may help as well: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm ^[3], https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm ^[4]

Article printed from Gardening Know How Questions & Answers: https://questions.gardeningknowhow.com

URL to article: https://questions.gardeningknowhow.com/trimming-lilac-and-azalea-a/

URLs in this post:

[1] https://www.gardeningknowhow.com/ornamental/shrubs/lilac/pruning-lilac-bushes-when-to-trim-lilac-bushes.htm: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/pruning-lilac-bushes-when-to-trim-lilac-bushes.htm

[2] https://www.gardeningknowhow.com/ornamental/shrubs/azalea/pruning-azaleas.htm: https://www.gardeningknowhow.com/ornamental/shrubs/azalea/pruning-azaleas.htm

[3] https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm

[4] https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm

Have any questions about this topic? Visit us at https://questions.gardeningknowhow.com to ask your questions and get friendly answers from gardening experts.

You can also find us at:
'Like' us on Facebook: https://www.facebook.com/gardeningknowhow
Follow us on Twitter: https://twitter.com/gardenknowhow - @gardenknowhow
Follow us on Pinterest: https://pinterest.com/gardenknowhow/