</p> The holidays are gleaming brighter than ever at Blossoms of Light™</a> this year at York Street, and thousands of visitors have already booked their tickets to enjoy the dazzling display of lights. We love welcoming first-time guests to this annual event, but we also work hard to redesign the show every year so that long-time members and visitors always have something new to look forward to.</p> How long does it take to design Blossoms of Light?</strong></p> The lead coordinators will start designing next year’s show while the current display is still up. It’s much easier to identify the areas where we need more lights, the color palettes we like and the changes we’d like to make while the gardens are still aglow with lights. After the initial walkthrough, we continue to adjust the design, modify color palettes, add or subtract trees and evaluate the experience as a whole before finalizing the design in late spring.</p> How much of the design stays the same from year to year?</strong></p> We re-assess the entire display every year, and to keep things fresh, almost every garden gets a new color palette. Usually, even if we really love the way an area looks, we won’t keep it the same for more than a couple of years. But don’t think that we forget our favorites! Palettes we like might simply move to a new location. We may also bring back colors to a certain feature after a break – this year, the teal tree in the Annuals Garden made a triumphant return! We are also always working to bring new special features to life to round out the display. This year, be sure to check out our immersive 360-degree lighting experience in Oak Grove, or the all-new projections on the Science Pyramid!</p> What factors do you consider when choosing color palettes? </strong></p> This is one of our favorite parts of the design process, but also one of the most challenging! When selecting colors, we think about the balance of “cool” and “warm” palettes, which colors look good together, where to incorporate traditional holiday palettes as opposed to more unique combinations, which colors are available in each size of bulb and more. We also think about the plant material we are decorating: would a garden look better with lots of colors, or would it be better to only select one or two colors?</p> How do you decide whether or not to decorate certain trees or plants? </strong></p> We work closely with the Gardens’ horticulturists to determine which trees and plants can be decorated. Some trees have fragile bark or branches or may be healing from a heavy spring snowfall, so we avoid those trees and exclude them from our design. For other trees, it comes down to basic logistics: if the trunks and canopies cannot be reached by ladders, buckets or climbers, then we won’t be able to decorate it. Finally, there are some areas where we would love to add more trees, but we’ve maxed out our electric power in the vicinity and don’t want to risk blowing a circuit.</p> Why are certain gardens not open during the event? </strong></p> While we’d love to open the entire property for Blossoms of Light, there are some realities of operating a night-time event in a snowy city that we must accept. Certain pathways are difficult to keep clear of snow, ice and water. We also consider how wide a path is and whether or not it is paved. Welcoming thousands of guests each night can cause crowding on narrow pathways, and unpaved paths would get messy very quickly!</p> Blossoms of Light is open every night through Jan. 3, 2020. Advance purchases are highly recommended to get the best price and to ensure admittance on your desired date. </strong></p> Get your tickets today!</a></p>
</p> In just a few days, the Gardens will dress up for Halloween for Glow at the Gardens™</a>, our nighttime celebration of all things pumpkin. Using all real pumpkins grown by local farmers, our team of pumpkin artists will create nearly a dozen larger-than-life pumpkin sculptures, hand-carved showpiece pumpkins, and of course, hundreds and hundreds of classic jack-o’-lanterns. While we love the elaborate sculptures, the classic jack-o’-lanterns hold a special place for us: after all, there is no symbol of Halloween more quintessential than the jack-o’-lantern!</p> But… why? Where did this tradition actually come from? Why do we all buy an over-sized gourd, carve one side into a scary face and plop it on the porch with a candle for all to see? The truth is that no one is really sure! The practice likely evolved from traditions stemming from a variety of cultures. There are, however, a few stories and themes that seem consistent from source to source.</p> Most agree that the word “jack-o’-lantern” developed in 1660s English folklore and was another name for a "will-o’-the-wisp": a phenomenon of faint lights appearing over bogs and wetlands that was commonly associated with magic and fairies. Variations of the will-o’-the-wisp story are present in folklore all over Europe.</p> It is also known that gourd and vegetable carving has been observed in numerous cultures for hundreds of years. The Irish seem like the most likely candidates for bringing the idea to the United States, as they are known to have carved turnips and beets into ghoulish faces representing goblins or spirits. In the United States, where pumpkins were readily available, the turnips and beets were no longer the ideal canvas.</p> Another legend is that of Stingy Jack, a blacksmith who managed to hoodwink the devil through a series of clever ruses into never claiming his soul. Upon his death, he was fated to linger on earth for all eternity and has only a burning coal to light his way, becoming known as "Jack of the Lantern."</p> Regardless of its origin, the jack-o’-lantern is easily one of the most important elements of American Halloween celebrations. Whether it’s a single jack-o’-lantern on your stoop or a display of hundreds of spooky faces side by side at Glow at the Gardens, there’s nothing like a hollowed-out pumpkin with a candle inside to evoke the nostalgia of trick-or-treating, costume contests, haunted houses and spooky October nights.</p> Join us Oct. 21-25, 2019 to celebrate the jack-o’-lantern in all its glory at Glow at the Gardens. Tickets are extremely limited and are expected to sell out in advance. Purchase tickets </strong>online</strong></a> or at the Bonfils-Stanton Visitor Center at 1007 York Street. </strong></p> New this year! Stop by the Gardens York Street location on Saturday, Oct. 26, 9 a.m. – 2 p.m., to take home a jack-o’-lantern from the show for free, while supplies last!</strong> Gardens' membership or admission required for entry.</p>
</p> With the temperatures still soaring into the high 80s, it’s hard to believe that it’s already time to prepare our gardens for fall bulb planting. But, if a thriving bed of brilliant or pastel blooms is your goal for this spring, now is the time to begin! Our annual Fall Plant & Bulb Sale</a> is the perfect place to shop for your bulbs, tubers and rhizomes.</p> Like any type of gardening, bulb planting can feel overwhelming if you’ve never done it before. Fortunately, we have a team of experts that can give you a leg up on making your flower beds the envy of the neighborhood.</p> Planning</strong></p> Before buying your bulbs, consider the following:</p> Will you plant them in a shady or sunny location?</li> When do you want your flowers to bloom? In general, crocus, snowdrops, dwarf iris and Siberian squill are very early bloomers. Grape hyacinths, tulips, daffodils, fritillaria and common hyacinths come next. Alliums, bearded iris, Dutch iris and foxtail lilies bloom in late spring or early summer.</li> How much water will you give your bulbs? How often do you run your irrigation?</li> Do you want bulbs that come back year after year without replanting or will you want to change your bulb display, using different types and colors?</li> Do you have lots of squirrels in your area? Focus on planting bulbs that squirrels don’t like to avoid them digging up and ruining your display. </li> </ul> Purchasing</strong></p> When buying bulbs, make sure they are firm and healthy looking. Some surface damage is okay as long it doesn’t compromise the bulb’s performance. At Fall Plant & Bulb Sale, our horticulture staff can assist you with making these evaluations.</li> Make sure you read the instructions on each bulb package to understand when they need to be planted, how deep and what sort of care they require.</li> If you aren’t planting your bulbs immediately, be prepared to store them in a dry, dark place that is cool but not freezing. Bulbs should not be stored in a refrigerator where fruits and vegetables are also stored.</li> </ul> Planting</strong></p> Amend your soil if needed to ensure good drainage, which is essential for all bulbs. </li> For planting spring blooming bulbs in the Denver area, the best time to plant is October when the average soil temperature is about 55˚F. If you plant too early, the warmer soil temperatures may burn the flower already developing inside the bulb and it won’t bloom.</li> For fall blooming bulbs, plant them immediately and they will bloom this fall.</li> In general, plant bulbs 3-4 times as deep as the height of the bulb with the tip facing up and the root zone facing down. Imagine 3-4 bulbs stacked on top of each other. Some bulbs are exceptions to this rule, so refer to the instructions for each bulb. If your soil has more clay, plant them a little shallower. If your soil is sandy, plant them a little deeper.</li> When planting lots of bulbs across a large area, dig the entire area to the desired depth. Then, place your bulbs as desired and fill back in with the soil you removed. This will go much faster than digging individual holes!</li> Water the bulbs very well after you plant them. This watering is important for the root formation that begins shortly after planting.</li> Fertilizer is not necessary with the initial planting. Bone meal for bulbs is not recommended in most Denver soils.</li> </ul> Post-Bloom</strong></p> After the plants bloom in the spring, leave the foliage to die back on its own. By doing so, the bulb receives maximum energy through photosynthesis for next season’s bloom.</li> To hide the fading foliage, plant summer-blooming annuals or perennials near the bulbs.</li> If you planted bulbs that naturalize, don’t deadhead and let them go to seed so they will increase.</li> </ul> Stop by the Fall Plant & Bulb Sale this Friday and Saturday, Sept. 27 and 28, to pick up plants and bulbs for your own fall garden. Members receive 10 percent off all purchases! </strong> Free admission to the Plant & Bulb Sale and to the Gardens.</p>
This spring was the first growing season of my prairie restoration experimental research plot at Chatfield Farms. Millions of pounds of seed are planted every year for ecological restoration and the demand for native seed exceeds its supply. I am interested in understanding how the source of seeds used in restoration relates to plant performance. </p> What performs better, seeds from cultivated plants or wild-collected seeds? For wild-collected seed, how does the environment from where they were collected relate to their performance (size, growth rate and reproductive output) at the field site? Do plants from more similar environments to Chatfield Farms perform better than plants from different environments? Are these relationships the same across many species, or do they vary among species? The results from this experiment will help land managers and restoration practitioners to choose appropriate seed sources to maximize restoration success.</p> To answer my research questions, I conducted an experiment on five study species commonly used in shortgrass prairie restoration: prairie sagewort (Artemisia frigida</em>), blue grama (Bouteloua gracilis</em>), prairie Junegrass (Koeleria macrantha</em>), dotted blazing star (Liatris punctata</em>), Rocky Mountain penstemon (Penstemon strictus</em>) and Sandberg bluegrass (Poa secunda</em>). For each species, I planted seeds from six wild-collected populations across the western U.S. and from commercially available cultivated seed.</p> I am tracking growth stage and life stage of each individual plant for two growing seasons, and biomass at the end of the experiment. With more than 1,000 plants involved, volunteers were integral in every step of my experiment: planting seed and repotting seedlings in the greenhouse, plot set-up and construction, planting seedlings into the ground and assisting with weeding and data collection.</p> Out of all the different types of measurements I am collecting, I am especially interested in phenology. Phenology is the timing of when organisms progress through their life stages or life cycle events. Plants are known to alter when they start leafing, flowering and set seed in response to environmental conditions. However, some of their phenology is also genetically determined – e.g. plants from environments with shorter growing seasons may always flower earlier than plants from environments with longer growing seasons. If some plant populations are not able to alter their phenology enough to keep up with the pace of climate change and the environmental conditions at the restoration site, then they may die out in the future, leading to restoration failure.</p> This blog post was written by Katherine Fu, Ph.D. student at University of Colorado Denver. Katherine is planning a career in plant ecology and conservation. Specifically, she is interested in focusing on research questions related to restoration, plant communities, succession and plant/animal interactions.</em></p>
With cooler weather and an overnight hail storm punctuating the early weeks of our growing season, the water gardens got off to a slightly slower start this year. Fortunately, our extensive collection of aquatic plants has made a triumphant comeback, and August is a great month to take a walk around the ponds to see them in their full glory. </p> Begin your stroll at the small pool in the Ellipse garden, home to the Chihuly sculpture, Colorado. A unique plant displayed in this pool is mosaic plant (Ludwigia sedioides</em>). This South American native thrives in warmer water, making this small pool the ideal spot for it to show off its intricate pattern of tiny floating leaves arranged in a mosaic pattern on the water’s surface. Hardy and tropical waterlilies (Nymphaea</em> hybrids), along with Colocasia </em>and Canna</em> hybrids, round out the display in this pond.</p> Head west to the Romantic Gardens’ pool, where you will find a display of Australian waterlily species and hybrids. These waterlilies are also a bit finicky, requiring consistently warm water and sunny weather to grow. Too many cloudy, cool days and they can quickly decide to go dormant. The Romantic Gardens’ pool is not connected to our recirculating waterway system and therefore the water temps stay an average of seven to 10 degrees warmer, making it the perfect summer home for these tropical day-blooming waterlilies. Flowers can reach up to 10 inches in diameter and are held high above the water, making for a show-stopping scene. In the center of this pool, two Santa Cruz water platters (Victoria cruziana</em>) surround a central recirculating fountain.</p> Continuing to the west, you will find the Four Towers Pool. This pond borders the south and west sides of the Science Pyramid and showcases a collection of hardy intersubgeneric waterlilies (crosses between hardy and tropical waterlilies that have proven to be winter hardy here in Denver) as well as gorgon plants (Euryale ferox</em>), hardy waterlilies, tropical waterlilies and an assortment of marginal plants (plants that typically grow in shallow water around the margins of a pond), including Canna</em> ‘Ermine’, C.</em> ‘Blueberry Sparkler’, Egyptian papyrus (Cyperus papyrus</em>), Mexican papyrus (C. giganteus</em>), swamp hibiscus (Hibiscus </em>‘Peppermint Flare’), and golden reed (Phragmites australis</em> ‘Aurea’).</p> As you follow the waterway heading west to the Steppe Garden, you will find bog bean (Menyanthes trifoliata</em>) flanked by islands planted with marginal plants including marsh marigold (Caltha palustris</em>), calla lily (Zantedeschia aethiopica</em> ‘White Giant’) and monkey flower (Erythranthe guttata</em>). Curators are currently experimenting with other steppe region species to see if they will also thrive in the boggy soil on these islands—stay tuned!</p> The next pool on our walking tour can be found at the west end of the Steppe Garden just as you enter the Annuals Garden. This pool is home to a collection of taro (Colocasia</em>) hybrids that showcase the range of foliage and stem colors that have been developed in this genus. Colocasia esculenta </em>is also displayed in this pond with an interpretive sign detailing its importance as a food crop in tropical regions. Hardy and tropical waterlilies accent the display along with the native mare’s tail (Hippuris vulgaris</em>).</p> As you walk through the Annuals Garden, you will come to the next ponds on our tour which are situated on either side of the walkway at the north end of this garden. These pools highlight the Rocky Mountain Legacy Collection—waterlilies that have been tested for performance at Denver Botanic Gardens over the years and which have historical significance. This collection includes the hardy waterlilies ‘Colorado’, ‘Denver’, ‘Denver’s Delight’, ‘Joey Tomocik’, ‘Bea Taplin’, ‘Attorney Elrod’ and ‘Cynthia Ann’. Tropical waterlilies in the collection include ‘Stan Skinger’, ‘William McLane’ and ‘Bob Hoffman’.</p> The Sacred Earth waterway to the south of The Hive Garden Bistro is next on our tour. This small pool is home to a collection of native aquatic plants including Rocky Mountain pond lily/spatterdock (Nuphar polysepala</em>), bog bean (Menyanthes trifoliata</em>) and broadleaf arrowhead (Sagittaria latifolia</em>).</p> Finally, the last stop on our walking tour is Monet Pool, our largest display pond situated just north of The Hive and stretching west to the border of the Japanese Garden. This water garden features the always popular Victoria</em> ‘Longwood Hybrid’ water platters as well as hundreds of hardy and tropical waterlilies, water-loving Canna</em> hybrids, aquatic Iris</em> and other marginal plants including pickerel plant (Pontederia cordata</em>), lizard’s tail (Saururus cernuus</em>), powdery thalia (Thalia dealbata</em>) and common rush (Juncus effusus</em>). Be sure to find the display of miniature hardy waterlilies and star waterlilies in the area near Le Potager at the southwest end of the Monet Pool to end your tour.</p>
For most of us Tibet summons images of mystery, lofty mountains, monasteries on high perches and, of course, yaks. Tibet has been called the Rooftop of the World, just as Colorado could claim to be the “rooftop” of the Continental United States, although Tibet’s 4,500-meter mean elevation is more than double Colorado’s mere 2,000! For the last 10 years, touristic travel to Tibet has been restricted and at times brought to a standstill. I had little hope to ever have a chance to go there until Harry Jans (a passionate world traveler from the Netherlands with great savvy) invited me to join a group of 20 keen alpine gardeners on a botanical trek from Lijiang (in northernmost Yunnan) where we boarded a small bus that will bring us ultimately to Lhasa.</p> Although I’m in the last leg of the journey, I feel it safe to say that few of the trips I’ve been blessed to take have reached so many heights, both literally and figuratively. Most every day for more than two weeks now we have driven well above 4,000 meters (higher than the highest peaks in Colorado) and from the tops of many passes (some above 5,000 meters) we have climbed to 17,000 feet on occasion. It is astonishing that not one of a bus full of travelers seems to have experienced altitude sickness or other mishaps; but Harry has selected carefully, perhaps, picking seasoned travelers.</p> I have read many books by the early great explorers of this region, including Frank Kingdon Ward and Frank Smythe. They invariably describe a region of virtually non-existent roads, the most primitive accommodations and almost stone-age living conditions of peasantry. I can only imagine what they would think. The highways that we’ve sped along are smooth and beautifully maintained. The hotels we’ve stayed at, even in the most modest towns, are of a level of luxury that one rarely finds outside large cities in America – immense chandeliers, marble floors, walls, often beautifully and decoratively patterned. Spacious, comfortable rooms and bathrooms with gleaming fixtures you’d not likely find in many towns in America — or Europe for that matter.</p> The homes of the farmers in the countryside are likewise sturdy, often large and attractive with beautiful patterning of bricks and trim fields everywhere, typically within stone walls crowned with thick bundles of rose canes to discourage trespassing.</p> There is a fly in the ointment, perhaps. Or better put, a yak in the pasture. More accurately, thousands, likely millions of yaks that have mown the landscape down to the nubbins in many areas, leaving only the most toxic and unpalatable herbs to proliferate. Fortunately, these are some of the showiest wildflowers: primulas in many species forming vast throngs of yellow or red; giant rhubarbs of several kinds; the daphne cousin Stellera chamaejasme, forming domes of vivid yellow (in Yunnan) or pink and white (elsewhere). But once you venture far enough or high enough you find areas that are too far for yaks to venture from their nighttime corrals, and here a flora of breathtaking variety and beauty prevails.</p> Just as each “summit” across the Great Basin seems to have its own Penstemon, Phlox, Eriogonum or Astragalus, every “La” (Pass) in Tibet unfurls a tremendous variety of new Meconopsis (poppies), Primula or Androsace. I have already accumulated more than 3,000 images in my database, and we still have a pass or two before arriving in Lhasa!</p>
Summer has finally arrived and Denver Botanic Gardens is beaming with flowers, visitors and events! This is a peak time to visit and enjoy the wide variety of gardens and plants it has to offer. Climbing plants are a key part of the displays in virtually every garden as they provide vertical interest as well as serve an essential ecological role for wildlife by providing habitat and food for many birds and pollinators.</p> As soon as you arrive and begin your journey into the Gardens, you will be greeted by Lonicera sempervirens</em> ‘Blanche Sandman’ (trumpet honeysuckle) inside the parking structure growing along the north side of the entrance with bright red blooms with yellow centers. Showy red berries follow on this vine and provide food for songbirds.</p> As you make your way to the Bonfils-Stanton Visitor Center, you will come across several additional varieties of climbing plants including Aristolochia macrophylla</em> (Dutchman’s pipe), Vitis vinifera</em> ‘Purpurea’ (purple-leaf grape), Humulus lupulus</em> (hops) and Parthenocissis tricuspidata</em> ‘Green Showers’ (Boston ivy). These fine specimens are located along the East side of York Street growing along the Parking Garage trellis.</p> As you then enter the Gardens through the Visitor Center, make your way to the Boettcher Memorial Tropical Conservatory where you will find Ipomoea carnea,</em> a species of morning glory with stunning pink flowers that weave through the arbor located on the second floor on the northeast side of the Tropical Conservatory.</p> Continue meandering through the Gardens until you reach the Romantic Gardens, where you will find Wisteria</em> frutescens</em> var. macrostachya</em> ‘Aunt Dee’. This cold hardy climber thrives in full sun, has lilac blue flower clusters and is an ideal vine for covering trellises and fences.</p> Just a short distance from the Romantic Gardens is the Herb Garden, which has a large trellis covered in several varieties of seedless grape vines, including Vitis</em> ‘Reliance’, V.</em> labrusca</em> ‘Concord’, V. labrusca</em> ‘Canadice’, and V</em>. ‘Suffolk Red’. These incredibly delicious grape varieties will inspire you to grow your own grapes in your home garden.</p> As you continue your adventure through the many gardens of Denver Botanic Gardens, you will find other amazing climbing plants. Take note of these wonderful plants and set forth to create your own vertical garden!</p>
