Think of its warm-season thrill as "just" the cheap carry-over between its more substantial and, even, sophisticated performance each winter. Dawn Redwood: 11 trees survived with no dieback. The feathery foliage of Ogon precludes such a fate. The close-up below shows the tree's needles in orderly ranks on either side of short branches. Gold-leaved dawn redwood, by contrast, brings grace, subtlety, seasonal variety, and unexpected flexibility to its performance. In the shot below, seemingly identical vegetative buds are visible at the base of a woody branch. Avoid groundcovers that are opportunistic climbers, cush as. In any normal soil, Metasequoia is self-sufficient in terms of moisture by its second year. Bonnie Singleton has been writing professionally since 1996. Disease Management Unfortunately, no chemical controls exist to treat redwood cankers, as of March 2013." They mature to the cones themselves—which, as far as cones go, aren't showy. I finally just cut it off -- it was dead down to the first lateral branches. Plant almost any time, year-round, that the soil is workable and sufficient water for establishment can be maintained. In deciduous conifers, a modified branch—the branchlet—takes the place of a petiole, whereas what would be a leaflet of a pinnate leaf is, for a deciduous conifer, the entire leaf: the needle. Allergic to bees? All branches below are fine. Pachysandra terminalis or Vinca minor are likely to be the most ready, successful options. My unproven understanding is that, while bald cypress enjoys growing directly in the muck and innundation of flood plains, dawn redwoods prefer to grow nearby, with their roots in the sub-surface water but their trunks fully on dry ground. This plant has some cultivated varieties. Metasequoia can be therefore be formed into magnificent and surprisingly narrow hedges that can be maintained at an elegant slenderness indefinitely. Whatever the cause, this is the Great Age of Dawn Redwood. Tree is about 12 feet tall. In other words, the trees shed both leaves and branches in the fall; deciduous broadleaves—maples, beeches, oaks, say—shed just their leaves. Production of all forms of new growth—the permanent woody stems, the deciduous branchlets they produce, and the needles the branchlets bear—continues so late into a given growing season that a sudden frost can, so to speak, catch the tree by surprise. Yet another, more unsettling, is that circumstances have somehow changed in the last century or so, setting Metasequoia free to flaunt itself in an ever-fuller spectrum: It could be that chemicals related to human civilization are mutagenic. Then a "fore-hedge" of hosta could revel in the late-day shade of its north or east side from spring until frost. Myrtle's easy when the conditions are right. The greenish-tan male flowers are in pendulous racemes up to a foot long, and can festoon the tree somewhat like Spanish moss. Dawn Redwood is an ancient and interesting tree with a very delicate, fern-like appearance, and a very tall, pyramidal shape. I always figured redwoods were pretty resilient trees. Mine is pretty healthy, but just today I noticed these holes on the trunk. A different but equally striking contrast in a nearby sunny pond would be achieved by any form of Typha. Because the winter interest of Metasequoia is so strong, planting even a cultivar, such as Ogon, that is shimmering and bright in the warm months can be more worthwhile for its leafless contribution to the cold-weather scene. When redwoods are chronically water deprived, the resulting stress can cause dieback. The source is Phytophthora ramorum, organisms resembling fungi that spread from one infected plant to another via spores in moist or humid environments. Rate of Growth Were they always appearing during those scores of millions of years, but we just haven't found any in fossils? I googled a bit but only came up with scale insects, and spider mites mostly, but i dont think those burrow into wood. These animals chew down to the layer between bark and wood called the cambium and interrupt the flow of nutrients to branches. Choices that would enjoy the tree's gentle shade include, If a hedge is your choice, a low evergreen groundcover would show off the dramatic parade of its ramrod-vertical trunks all winter. Young plants suffer from leader dieback if exposed to drought. Dawn Redwood is the hardiest of the redwood/sequoia family and is extremely fast-growing. This is a deciduous conifer, fast growing and an excellent specimen tree for large gardens and parks. Each fall, the branchlets are shed, not just the needles they bear. Cupressaceae, the Cypress family. 11 juvenile trees were decimated. Ogon's lively gold foliage combines with its feathery texture—which, somehow, tones down the gold—such that the tree goes with anything. She has written for various newspapers and magazines including "The Washington Times" and "Woman's World." They are arrayed on either side of a slender branchlet, creating a feathery structure that, in non-coniferous woody plants would, simply, be a pinnate leaf. Ogon could be a solo focal point at the end of even a compact garden; a quartet could canopy the full-sun garden of a townhouse, casting lacy shade all summer but permitting full sun all winter. Early spring, before or as the new foliage is emerging. Avoid groundcovers that are opportunistic climbers, cush as Hedera or Euonymus, because they would inevitably ascend the very trunks that are so worth highlighting in their leafless winter reveal. If you're blessed with a shallow sunny pond nearby to the south and west of your Metasequoia, you could give it over to sunloving Nelumbo, which would achieve the same contrast but preserve the to-the-ground view of the dawn redwood's extraordinary flaring, buttressed lower trunk. If, though, this winter combination isn't a priority, then your hedge's focus could be on partners for warm-weather excitement. Ogon was a spontaneous variant discovered as a seedling at a nursery in Japan. The temptation for a particularly narrow hedge is to employ it where the planting bed itself is particularly narrow. To protect redwoods in urban settings, maintain plenty of space around each tree and avoid competing plantings that rob the soil of moisture. My 3 year old Dawn Redwood tree leafed out this Spring but then the top half apears to be dying. In resuming growth in the spring, then, the permanent branches that were dormant all winter produce not just new woody growth that is also permanent, but also new branchlet growth that is deciduous. Dawn redwood is closely related to bald cypress (Taxodium) and redwood (Sequoia). The California redwood is among the tallest and oldest tree species in the world, but even such mighty trees can suffer from dieback. It might be possible, therefore, to grow the hedge of any height while keeping its width to less than a foot. its surprising, graceful gold foliage: Gold-foliaged conifers can be so sturdy that they create the impression of too-insistent, hard-on-the-eyes rigidity. So, even though the branchlts are shed readily with the onset of frost, onset of deep cold can be so sudden in Zone 5 that the supportive woody growth can experience frost “burn.” It recovers the following spring, thanks to the tree's unusual ability to sprout from dormant vegetative buds that are closer to the trunk than the burned tips. Canker Canker on redwood trees is caused by the fungi strains Botryospheria dothedia, Seridium species and Cytospora species. Once thought extinct, the Dawn Redwood was rediscovered in its native China in the mid 1940s. While such a hedge will be a uniform fluffy mass during the growing season, from hard frost to the return of growth the following spring, it will be a remarkable series of ramrod-straight slender trunks strongly visible within the narrowest thickness formed by the stubby branches. Variegated foliage can work well, too, regardless that yellow is one of its components. I'll report back in spring. The exception would be when trees are planted very closely to form hedges; see the second "How to handle it" box, below. There is no treatment other than pruning affected limbs. Supremely feathery when in foliage; when leafless during the cold months, tidily pyramidal and, when mature, with highly-textured bark and sinuously-buttressed trunk that create a primordial vibe. Dogwood, Cornelian Cherry: eight of eight trees survived unscathed; Goldenrain: dieback of pencil diameter branches was noted on all four of our ten year old trees. its appreciation of soil moisture: Although not as water-happy as bald cypress (which can thrive where soil is permanently saturated or, even, when the soil surface is beneath several feet of water), dawn redwood is also comfortable in soil that is damp as well as heavy. its wind tolerance: Wilder weather is ever-more in our present, not just our future. If you are able to space the dawn redwoods in your hedge as impressively close as recommended, be careful to ensure that sufficient moisture will be available. Paw Paw: none of our four trees experienced any degree of dieback Family. Or can I train another branch to become the leader? We did have an unusually cold winter this year which may be the culprit. Our formerly gorgeous dawn redwood is about ten years old and 40 ft. high.