Hydrangeas
Beautiful, Pest-Resistant, and Disease-Resistant!
Hydrangeas are beautiful, colorful flowering plants that are pest resistant and disease resistant. They make beautiful dried flower arrangements, and come in many different varieties. You will need to know the hydrangea selections that will do well in your particular zone. The Plant Hardiness Zone Map and your local nursery or the knowledgeable gardeners in your area can help you determine the best varieties for your specific locale. Some of the very cold hardy varieties are the Annabelle and the Paniculatas. All hydrangeas are partial to the morning sun and afternoon shade.
Points to Remember
- If you want to purchase hydrangeas, choose the ones that are in bloom whenever possible. This is the only way you can be very sure that you are buying the variety you have in mind. They are very difficult to differentiate when not in bloom.
- Hydrangeas are best planted in early summer or fall, clear away from danger of frost and from the hottest days of summer. If for some reason you decide to plant during hot summer days anyway, pay very good attention to their irrigation needs. Under normal circumstances, you need to water them deeply each week especially during dry weather.
- Do not plant hydrangeas under a tree, or you will be fighting a very difficult root problem. Do not use an area either where grass will not grow.
- Hydrangeas like well-drained soil. If you have heavy soil, add mulch like pinebark.
- Note the depth the hydrangeas have been planted in the pot. That is the same depth you need to plant them in the ground.
- Hydrangeas produce flowers on new branches. Blue-colored blooms require acidic soil with pH of 5.0 to 5.5; pink flowers need alkaline soil, with pH of 6.5 to 7.0. Add enough limestone in the soil at time of planting to maintain the pink hue. For blue, add aluminum sulphate or sulfur. For lovers of blue, try Nikko Blue.
- The Merveille, Regula, and Rose Supreme are some of the varieties that can be blue or pink depending on soil pH.
- Endless Summer and Blushing Brides are examples of Hydrangea varieties that are for all climates.
- Protect Hydrangeas from sudden cold temperatures, especially if they have been subjected to an extended warm spell.
- If you want your own dried Hydrangea flower arrangement, experiment harvesting from August through September to find the best color that appeals to you. You want them somewhat dry on the plant before you pick them, as fresh blooms do not dry well in open air.
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