Tag Archives: ornamental trees

A Visit with a Plantsman Extraordinaire

upper_patio.1600Spring just wouldn’t be the same without a visit to Doc Hencke’s garden in Scotts Valley. I think of it as a learning experience at his personal arboretum, outdoor laboratory, propagation field trial and stunningly beautiful landscape. At every turn colorful vines bloom high up into the trees he has collected and nurtured from his travels. Richard Hencke is a walking encyclopedia, energetic and funny while sharing his knowledge and stories about each and every plant. Here are just some of the highlights of this year’s visit.

The definition of the word arboretum describes Richard Hencke’s anemone_clematis_vine.1920garden perfectly. It’s a place where an extensive variety or trees, shrubs and herbaceous plants are cultivated for scientific, educational and ornamental purposes and my tour this year started at a tall California native Flannel Bush which he had to rope to the ornamental iron fence after it blew over in that wind storm a month ago. Looked to me that his efforts to save it will be successful and if anybody can it will be Doc Hencke.

Explaining that the soil in this part of his garden is blue hard sub soil and has taken it’s toll on a couple other plants. One of his Eutaxia obovata also called the Bacon and Eggs plant was just going out of bloom but 2 others nearby have suddenly died. Quite the loss as this shrub is one of those plants that really gets your attention when it’s covered with thousands of golden pea-shaped blossoms.

Next on the tour came the straw bale veggie garden. Since the soil in this straw_bale_veggies_Richard.1600sunny spot is also sub par this method of cultivation has been a real success. Richard told me that when the bales were first put in place he watered them thoroughly to start the fermentation process. He used a meat thermometer to check their internal temperature and determine when this process was complete and vegetables would thrive. He then soaked them with liquid organic fertilizer and applied some blood meal to augment nitrogen. His crop of kale, lettuces, spinach, bush beans and cucumbers looked robust and happy.

Always the story teller, Richard pointed out a Cantua, the Sacred Flower of the Andes that he air layered to increase his collection. He laughed when he told me of a trip to Peru and the guide who misidentified several plants. Richard had to gently supply the correct name for the species.

Also in his collection is an experimental round avocado developed by DT Fleming in Maui during the early 1900’s. It has survived 3 winters so far in Hencke’s Scotts Valley landscape so he is becoming more confident of its ongoing success. Took Richard quite a while to figure out which was the top of the seed. Being round he had stuck the toothpicks in the sides but put the wrong end in the water glass. He laughed that as soon as he figured out his error and turned it the other way up. It sprouted right away.

His Variegated Mint Bush at the edge of the back patio was just completing it’s blooming cycle but still covered with deep purple blossoms. Nearby we stopped at a very large clump of salvia confertiflora starting to bloom with showy red spikes of flowers. Richard lamented that it’s a little too happy. The clump has grown to near invasive size. “Why did I plant this here? Now what am I going to do with it?, he said. This is a good lesson for all of us. The right plant in the wrong place can become a nightmare.

His collection of salvias that are planted in the right place include a beautiful salvia mexicana that will soon be covered with rich blue flowers. He also grows saeonium_blooms.1600alvia chiapensis and a salvia-like plant native to Hawaii called salvia lepechinia. This deliciously scented plant will be covered soon with reddish lavender lipstick-like flowers adored by hummingbirds like all the salvias.

The Hencke garden has a hillside for Hawaiian plants, a slope where he nurtures and propagate succulents, a shade garden for heliconia and houseplants that have adapted to his climate but trees are Richard’s first love. He showed off his hillside that is now home to sugar pine, silver poplar, gingko, alder, New England black cottonwood, tamarix, purple weeping birch and an Oklahoma Wild Sand plum that could win awards for it’s size and beauty.

Richard uses a Smart Timer to monitor and control his irrigation. That way he can use the minimum of water that allows his plants to survive. I put him in touch with another local gardener, Robby Frank, who helped him install the system. Gardeners are always pleased to help and share what they know and what they grow.

I enjoyed so many more plants and trees in Richard’s garden I could hardly keep up with the stories of their humble beginnings. As usual he packed my car with rooted cuttings and starts of many plants. I’m looking forward to the time when my Sacred Flower of the Andes starts to bloom.

Frozen Plant Care and Plants that Don’t Freeze

toyon.1600Early on one of those freezing mornings I came across a large stand of California native toyon shrubs, every branch covered with juicy red berries. Dozens of songbirds were enjoying the feast loading up and bracing for another cold night. You couldn’t ask for a more Christmas-y plant. Bright red and green- the Christmas colors.  I made a note to put toyon on my list for gift ideas.  What would be better than to give my loved ones something that feeds the birds and the spirit?

Toyon is a hardy shrub in our area no matter how low the temps drop. Many of the plants in your garden may not be so lucky after the multiple nights of freezing weather we recently experienced. Even if you covered sensitive plants a hard frost can nip plants that normally would be fine in a light frost.  Here’s how to deal with frost damage.

Don’t be tempted to rush out and prune away the damaged parts of  plants.  This winter will have more cold weather and the upper part of your plant, even if damaged, can protect the crown from further freezing and provide protection for tender new buds and shoots coming along for next year. This applies to citrus trees, too. If a perennial like Mexican sage froze to a gooey, black mess, cut the plant down to the ground. It will re-grow come spring from the root system.

Remember If you have plants that need covering in another frost later this winter, use a frost blanket, light towel, sheets, burlap or other type of cloth and not plastic.  The cold will go right through plastic and damage the plant.

Getting back to my Christmas list, everybody loves color in the winter garden. Besides toyon berries to feed the birds and other wildlife, Strawberry trees have fruit for much of the winter as do crabapples, beautyberry,  pyracantha and nandina if the robins don’t get them first.

Mahonia or Oregon grape will be blooming soon and their yellow flowers  would look great with golden Iceland poppies. Many of their leaves are purplish or bronze now that the nights have gotten cold and are very colorful.  Hummingbirds favor their flowers and many songbirds eat the delicious berries.

For those really dark places, fragrant sarcococca is perfect combined with red primroses and will be blooming very soon. You can smell their perfume from a long distance. Hellebores bloom in the winter, too, and offer texture in your containers.  A variegated osmanthus will hold up in even our harshest weather and would be a show stopper in a Chinese red container.

If the idea of sitting under a beautiful shade tree in the summer would appeal to the gardener on your list, flowering cherryyou might consider giving them a Paul’s Scarlet Hawthorn that’s covered in masses of rosy blossoms in the spring and colorful berries in the winter.  October Glory Maple is a great tree for shade and gorgeous fall color. Autumnalis Flowering Cherry blooms twice a year giving you double the show.  Mine is in the middle of its fall blooming cycle right now.  It’s a welcome sight. A smaller Southern Magnolia like ‘Little Gem‘ with huge fragrant white flowers would also make a nice gift.

These are just a few of the shade and ornamental trees that would make a valuable addition to any landscape. Visit a nursery to look for those plants with berries and winter color for other gift ideas.