Showing posts with label clematis. Show all posts
Showing posts with label clematis. Show all posts

Saturday, June 10, 2023

GardenDC Podcast Episode 151: Clematis

In this episode of GardenDC: The Podcast about Mid-Atlantic Gardening, we talk all about Clematis with Jeff Jabco, Director of Grounds and Coordinator of Horticulture at Swarthmore College and the Scott Arboretum. The plant profile is on Penstemon and we share what's going on in the garden as well as some upcoming local gardening events in the What's New segment. We close out Dr. Allan Armitage*, who returns to share the Last Word on heat in the garden.


BTW, YOU can become a listener supporter for as little as $0.99 per month! 
See how at: https://anchor.fm/gardendc/support.

*Dr. Allan Armitage is also offering a discount for free domestic shipping when ordering his books through June 2024 at allanarmitage.net, simply enter the code LASTWORD at checkout.

Show Notes:

01:26 Meet Jeff Jabco 02:13 Jabco grew up in a small town with the influence of gardening around him, allowing him to foster his fascination for plants. 03:25 Jabco got his first horticulture job at a local landscape nursery at 14 years old where he learn he was interested in both the artistic and scientific side of plants. 05:25 Jabco majored in horticulture with an emphasis on plant breeding and minored in landscape architecture. 07:53 Jabco still grows fruit crops along his property, including brambles, blueberries, cranberries, and figs in a “cool Zone 7.” 10:25 Swarthmore College/Scott Arboretum is open to the public, allowing visitors to see the gardening and landscaping across campus. 14:30 How to pronounce Clematis? 15:45 Where are Clematis native to? 18:31 How tall can Clematis (Viorna) get? 19:08 The hardiness of different varieties of Clematis in different zones, and how they react 22:50 Find information about Clematis online at https://www.clematisontheweb.org/new-... to learn more about your specific variety. 24:44 How, when and where to prune your Clematis - don’t be afraid, and pay attention to how it reacts. 27:48 Gardeners prune their Clematis to optimize the amount of blooms in a garden setting, and to keep them at a manageable size. 28:56 Mother's Day syndrome: Why there are so many garden blooms in May. 30:24 How to prune the May-blooming Clematis, what happens to them, and what would happen if you didn’t 32:23 If you deadhead and cut back shoots by 6 to 12 inches of the large-flowered May-blooming Clematis after they’ve finished flowering, they may give you a second round of flowers in the summer. 34:03 Which type of Clematis to give to new gardeners, or which to start with as a new gardener? 35:52 What if you didn’t prune your Clematis? 37:27 'Sweet Autumn' Clematis takeover - a highly invasive plant. 39:37 Growing Clematis companions: How do they grow and what should they be grown next to? 43:40 How to help your Clematis grow higher if it can’t stick onto the surrounding materials. 44:01 "The ‘Polish Spirit’ is probably my go-to plant for a novice gardener.” 46:35 Rebar, branch scraps, and wire: What to use to build your own garden post. 48:56 What to ask your local hardware store to get started on your own DIY garden post. 49:40 Clematis 'Venosa violacea’ is a staple for Jabco as an easy-to-grow Clematis with a “glowing” appearance. 50:47 While Clematis ‘Roguchi’ requires support, it makes a beautiful cut flower and can grow high with sufficient support. 52:45 Some of Jabco’s favorite wide-open Clematis include long-bloomer ‘Jackmanii’, ‘Hagley Hybrid’, ‘Guernsey Cream’, ‘The President’, ‘Warszawska Nike’, and much more. 54:42 The ‘Dutch Sky’ Clematis came out on top of Jabco’s “Clematis trial” in 2014. 57:52 Where to find recommended Clematis www.clematisinternational.com 58:56 While the ‘Taiga’ variety is a beautiful and smaller variety of Clematis, it does have slightly more restrictions than its counterparts. 1:01:34 Fertilizing Clematis: Provide even moisture for the plants and decent drainage with good quality dirt, compost, and a slow-releasing fertilizer with a lower Nitrogen count in order to promote reflowering. 1:05:26 Penstemon: This week's Plant Profile! 1:07:38 Garden updates: Hydrangeas and Spirea are blooming, garlic and blackberries are ready for harvesting, and peas and lettuce are finishing up for the season. 1:08:16 Dr. Allan Armitage offers a discount of free domestic shipping 1:08:38 Upcoming Events: Talk to the Silver Spring Garden Club; Under the Arbor - Tussies Mussies - A Bouquet with a Message; Washington Gardener Photo Show. 1:10:30 Groundcover Revolution 1:11:53 The Urban Garden 1:12:52 The Last Word on heat in the garden by Dr. Allan Armitage. 1:13:31 What's the best medicine for the summer heat? Keep your plants strong in the spring 1:14:01 "Daytime temperatures are not the issue … as far as the health of the plant is concerned, when it gets hot and stays hot at night, plants respire."

Clematis Links:
Clematis on the Web: https://clematisontheweb.org/
International Clematis Society: https://www.clematisinternational.com/

Clematis Sources:
Brushwood Nursery     www.brushwoodnursery.com
Hummingbird Farm      hummingbirdfarm.net
Springhill Nursery     springhillnursery.com

If you liked this episode, you may also enjoy listening to:
~ GardenDC Podcast Episode 98: Native Vines

This episode is archived at: 

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Episode Credits:
Host and Producer: Kathy Jentz
Interview Editor and Show Notes: Marissa Yelenik

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Saturday, July 04, 2020

GardenDC Podcast Episode 18: Shade Gardening, Clematis, and Logging Offline in the Garden

This episode, we talk with Jenny Rose Carey about Shade Gardening. The plant profile is on Clematis and I share my tips for Logging Offline in the Garden.



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Wednesday, June 24, 2020

Plant Profile: Clematis


Clematis is a perennial vine that features blooms from large and small in a rainbow of colors. The flowers shapes can vary from layered stars to tiny bells. Many have wavy edges or twisting petals.

The showy flowers aren’t the only cool thing about clematis. They also attractive seed heads that last for months and add additional seasons of interest. Clematis make excellent cut flowers and their seed heads are great to use in dried arrangements.

Some clematis are more shrubby than vining; and others have a running habit that makes them a good groundcover option. Some of the climbing vines are aggressive spreaders like the invasive ‘Sweet Autumn’ Clematis, while most others are slow-growing and stay relatively small—making them perfect for a container.

There are springtime bloomers; while others bloom late in the summer and into fall.

There are over 200 different species of clematis and hundreds of different cultivars. The purple ‘Jackmanii’ is the best-known clematis of all time. Also popular is the pink-and-white ‘Nelly Moser’ and the new ‘Taiga,’ with its dramatic green center.

There is a native Clematis virginiana, known commonly as Virgin’s Bower, that looks very similar to ‘Sweet Autumn’ Clematis. There is also Clematis viorna with bell-shaped blooms that is native to the southeastern U.S.

Clematis are said to demanding to grow and harder to prune, but their needs are actually fairly simple. Clematis want their roots kept moist and their heads in the sun. (One exception to that rule is the pastel-flowering clematis, which will fade in strong afternoon sun.)

Don’t worry. You won’t kill it by pruning at the wrong time. If you make a pruning mistake, you may deprive yourself of flowers for a season, but you are still likely to get a few blooms.

The early spring time bloomers of Clematis Group 1 bloom on old wood and need only pruning to reduce their size or to remove damaged branches.

In Group 2 are the clematis that bloom in early summer. These bloom on both old and new wood. Most of the large-flowered hybrids are in this group. Prune them in the spring before new growth begins. Make your cuts just above the healthiest-looking buds. Next, cut out any tangles and damaged wood.

In Group 3 are clematis that flower from mid-summer well into fall. They bloom only on new wood and can be cut back hard in the spring to within 6 inches of the ground.

Clematis are heavy feeders need to be fertilizes regularly during the growing season, but remember to stop when they begin to bloom.

Classic companion plants for clematis include roses, evergreens, crape myrtles, and even other vines.

For more about Clematis, see these answers to specific question:


Clematis - You Can Grow That!

The video was produced by Washington Gardener Magazine.
Visuals by Taylor Calavetinos
Audio by Kathy Jentz

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