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Mums

Cerise mum, second year.

By Kyrnan Harvey

This year the deer have left our chrysanthemums alone. So far. This is our third year in the Three Villages, and the assumption originally was that aromatic plants are passed over by the white-tailed browsers. Wishful thinking.

 

Old-fashioned Korean mums naturalized

Last year, the mums were left alone all summer, until the buds formed on the flower stems, which apparently are a delicacy for discerning deer in the know. This year, we sprayed deer repellent once on the cerise mum near the driveway entrance but none on the ‘Dark Bronze Daisy’ or the unnamed Home Depot orange mum. And who knew? These latter two are a square yard untouched and flowering beautifully for a month already and the cerise one is just now popping.

This morning, while pulling up unwanted goldenrod volunteers, I became reacquainted with a gorgeous white one, very tall and promising in bud now, that I had plucked last year from the florist shelves at the market.

As a garden designer favoring naturalistic plantings, I generally eschew the seasonal mum installations. But I do love the colors; who doesn’t? There are many varieties grown, often two apparently identical colors are actually merely similar colors, subtly different varieties. Usually you will find a small label with a cultivar name on it, like ‘Plumberry Purple’ or ‘Flamingo Pineapple’. Every year one or two colors at Home Depot or Stop&Shop or my myriad wholesale sources catches my fancy. I am often asked “Are they perennial?” “How do you know which ones will come back next year?”

Chrysanthemum ‘Sheffield Pink’

In years past I would answer that the “old-fashioned” single ones, formerly called Korean mums and rarely seen in garden centers, are reliably hardy and perennial. There is a charming single pale apricot must-have called ‘Sheffield Pink’ that is absolutely perennial and that flowers very late. But I am now convinced that the brilliantly colored doubles will naturalize too and need not be regarded as throwaways. I buy just one piece (as the nurserymen say) and find a suitable location for that color.

I cannot account for the gustatory vagaries or the culinary whimsies of our graceful quadripeds, but here is how to get “dem” mums to survive the winter and to increase in girth. Don’t plant them too late and don’t let them dry out.

Don’t buy a pot in September for your front door, neglect to water it three straight sunny 75 degree days, and then not plant it outside until Thanksgiving.

Typically chrysanthemums are root-bound in those green plastic pots. Root-bound means they dry out quickly and watering can’t penetrate the density of roots. The good independent garden centers have staff that know how and how often to water them to keep them from drying out — not so at the box stores. There is a point of no return, if left unwatered for too long. Haven’t we all seen inventories of mums fried and roasting at the edge of the parking lot, wilted to a crisp? It’s okay to decorate the porch for a couple weeks, but put saucers under them and if they’re in the sun err on the side of too much water.

Chrysanthemum ‘Dark Bronze Daisy’ third year

Another common pitfall is to assume that once it is planted and you have thoroughly drenched it, you are done. Not necessarily the case, never more so than the past few weeks when it has been unseasonably warm and it hasn’t rained. We did a large mum installation at a client’s temple for the holidays. No automatic irrigation, and we watered by hose two times a week for a couple weeks. Checked in after a long weekend and sure enough a few of the 70 were wilting. Even where there is automatic irrigation, hand water if there are no good soakings from mother nature.

When planting out your mums, they will want, like most daisies, a sunny spot if your intention is for them to perennialize. Also needed is good, loose soil that’s been dug free of tree roots and soil compaction. Water in well at planting and as necessary for a few weeks, so that they will root in to their new soil. This is the key; this is what determines whether they survive through to next year: Are they established in the garden well before the hard frosts of January? I usually leave the unsightly spent flowers uncut until March. My sense is that these provide insulation from winds to the basal foliage, visible even in a flowering plant, upon which the plants’ future depends.

Of course, you can still plant mums with no expectation that they will provide perennial pleasures. You still have to keep them watered, but you can cram them into crummy builders’ fill under oak trees — as we did at the temple — and do it again next year. But it is really delightful and gratifying to see drifts of sprays of that superb color year in, year out. They actually are carefree and drought tolerant once established. And if the deer one year take a fancy to that color? You’ll live, and next year you will enjoy the show more.

Kyrnan Harvey is a horticulturist and garden designer residing in East Setauket. For more information, visit www.boskygarden.com.

All photos by Kyrnan Harvey

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Stop cutting back mums and Montauk daisies by the Fourth of July to ensure autumn flowering. Photo by Ellen Barcel

By Ellen Barcel

Holidays are a time when people enjoy a rest, take a vacation from work and like to celebrate special occasions. But, holidays can also serve as markers for gardeners, a calendar of sorts, reminding them what needs to be done and when.

February 2 is Groundhog Day, a day in midwinter where whimsy takes over and the rodent “predicts” either an early spring (as this year) or six more weeks of winter. In any event, February is the perfect time to check out the gardening catalogues, plan your future garden and start your hardier crops indoors in a sunny location. Check the seed packages to see how many weeks before moving them outdoors you should sow the seeds. Cuttings from early flowering shrubs, like forsythia, can be made in February and brought inside to force early flowers.

Poinsettias can be toxic to children and pets, so place them out of reach during the Christmas holidays. Photo by Ellen Barcel
Poinsettias can be toxic to children and pets, so place them out of reach during the Christmas holidays. Photo by Ellen Barcel

March 17, St. Patrick’s Day, is the traditional start of the pea planting season. Of course, it’s really important to check the weather and the soil conditions. Peas are one crop that prefers cool weather but can’t grow in the extreme cold we usually have on Long Island in mid-March. Think of this as a heads-up to get ready to plant as soon as the soil is workable and warm enough.

Easter is a holiday when people tend to bring forced plants, grown in nurseries, into the house. Be really careful here as lilies, while traditional for the season, are toxic to cats. Even the water that the cut flowers are placed in can cause series health issues for them if they drink it; so keep lilies away from your cats. Generally, plant Easter gift plants in the garden as soon as possible but usually after the blooms have faded — so you can enjoy them in the house.

Memorial Day (some people say Mother’s Day, which is a bit earlier) is usually the start of really warm weather, so that tender annuals, such as tomatoes and herbs such as basil and dill can be moved outdoors. Marjoram and summer savory will also die in a late frost; so wait till the weather is warm enough.

Fourth of July is usually considered as the last date in the growing season that perennial flowers, like Montauk daisies and mums, can be pruned back and still complete a flowering cycle, blooming in very late summer to autumn. The rule of thumb is to start pruning them when green buds appear in spring, and stop 100 days before bloom time. That is usually July 4.

Stop cutting back mums and Montauk daisies by the Fourth of July to ensure autumn flowering. Photo by Ellen Barcel
Stop cutting back mums and Montauk daisies by the Fourth of July to ensure autumn flowering. Photo by Ellen Barcel

Labor Day is generally the last day in the growing season that second (or third) season crops can be planted. The first frost day on Long Island is generally considered to be early to mid-November; so count backward from that day for the exact planting time, based on the number of days each plant takes to mature. Some varieties of bush beans will produce a crop in 50 to 60 days, which means plant them in early September, that is, Labor Day for a crop before frost. Also, very tender houseplants should start to be brought indoors if they have summered outside. Particularly watch the low night temps.

By Columbus Day all your houseplants should be indoors. Move tender shrubs or small trees like figs to an unheated garage once the leaves fall. Lift tender bulbs and store them in a cool dry place once the leaves have all died back to the ground.

Thanksgiving, late November, is usually the last time you can plant spring bulbs like daffodils, hyacinths, tulips, etc, outside. Those and other spring bulbs can actually be planted as long as the ground is not frozen. If you miss the cutoff date, consider storing them in the fridge till spring.

Christmas is a time when many decorative plants are used in the house. Be particularly careful with indoor plants, such as poinsettias, which can harm both young children and pets if ingested. And we all know that little kids and pets put everything in their mouths.

While the above are generalities, always take into consideration the actual conditions at any given time. If a sudden cold front is predicted for mid-September, make sure that your houseplants are indoors. If the ground is still frozen in early April, then you just can’t plant your early/cool weather plants yet.

Ellen Barcel is a freelance writer and master gardener. Send your gardening questions and/or comments to leisure@tbrnewspapers.com. To reach Cornell Cooperative Extension and its Master Gardener program, call 631-727-7850.

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By Wendy Mercier

As summer fades into fall, many plants and flowers will continue to bloom until the first frost of winter. Annuals, such as geraniums, marigolds and begonias, can have an extended growing season with proper watering and pruning. Plants such as Montauk daisies, Black-Eyed Susans and hardy mums are just beginning to come into season, and are a sign that autumn is upon us.

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