Avoid Pruning 18 Specific Plant Species, Advise Experts
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In the world of gardening, deadheading – the act of removing spent flowers – is a common practice to encourage new blooms and maintain a tidy appearance. However, there are certain flowers that benefit more from being left alone. Here's a guide to which flowers should not be deadheaded and why.
Perennial Verbenas, Russian Sage, Helenium (Sneezeweed), and Asters are all favourites among pollinators. Cutting them too early can disrupt the pollinator visits and rob them of their vital nectar source. Fall asters, in particular, should be staked to prevent flop and deadheaded selectively mid-season, but leaving some bloom for birds in autumn is recommended.
Poppies, Forget-me-nots, Columbine, Foxglove, Lobelia, and certain perennials like Salvia are excellent self-seeders. Leaving the spent flowers allows them to drop seeds for the next season's growth. Moreover, certain perennials like Salvia (especially later in the season from August onward) should not be deadheaded because even faded blooms still contain nectar that supports hummingbirds and pollinators.
Rose varieties with hips (e.g., Rugosa rose) should also not be deadheaded. Allowing hip development provides food for wildlife and has practical uses. For instance, the hips of Rugosa rose can be used to make jams, jellies, and teas.
Some annuals like Angelonia, Super Petunia, Calibrachoa, Impatiens, Begonia, Lantana, and Salvia, and perennials like Coneflower, Hydrangea, Astilbe, Blanket Flower, Peony, Bleeding Heart, Columbine, Daylily, Modern Shrub Roses, Hyssop, Black-eyed Susan, Heuchera, and Sedum generally do not require deadheading because they either do not rebloom or gardening maintenance is easier without it.
In summary, avoid deadheading when you want to encourage natural reseeding, support wildlife in late seasons, or if the plant does not benefit significantly from deadheading. For example, Bee balm (Monarda) blooms profusely and reseeds energetically, making it unnecessary to deadhead. If planting native sunflowers, it is recommended to leave a few heads in place for finches, while harvesting the rest at peak ripeness for roasting. Goldenrod (Solidago) provides nectar for bees in late summer and food for birds through fall, making it another flower that benefits from being left alone.
Skipping deadheading can create an ecosystem that supports wildlife, conserves labor, and elevates your garden's natural rhythm. Selectively trim only when form or safety requires it, and always let nature set the pace.
- Perennials like Verbena, Russian Sage, Helenium (Sneezeweed), and Asters should not be deadheaded early to maintain pollinator visits and their nectar source.
- Poppies, Forget-me-nots, Columbine, Foxglove, Lobelia, and Salvia are self-seeders that benefit from leaving spent flowers for seed drop and nectar support for hummingbirds and pollinators.
- Roses with hips, such as Rugosa roses, should not be deadheaded as hip development provides food for wildlife and can be used for making jams, jellies, and teas.
- Annual plants like Angelonia, Super Petunia, Calibrachoa, Impatiens, Begonia, Lantana, and Salvia, and perennials like Coneflower, Hydrangea, Astilbe, Blanket Flower, Peony, Bleeding Heart, Columbine, Daylily, Modern Shrub Roses, Hyssop, Black-eyed Susan, Heuchera, and Sedum do not require deadheading.
- Deadheading can be skipped when the goal is to encourage natural reseeding, support wildlife in late seasons, or if the plant does not benefit significantly from deadheading.
- Bee balm (Monarda) blooms profusely and reseeds rapidly, making it unnecessary to deadhead.
- When planting native sunflowers, it's recommended to leave a few heads in place for finches, while harvesting the rest at peak ripeness for roasting.
- Goldenrod (Solidago) offers nectar for bees in late summer and food for birds through fall, making it another flower that benefits from being left alone.
- Skipping deadheading can create an ecosystem that supports wildlife, conserves labor, and adds a more natural rhythm to your garden.
- Selectively trim only when garden form or safety requires it, but always let nature set the pace to maintain a harmonious garden lifestyle.