It was confirmed on garden balsam, Impatiens … Horticulturists are always developing new impatiens varieties, including some that are highly resistant to the fungal disease. In Case You Missed It: Advertisement. These products are not absorbed by the plant and are washed off during watering or rain. It’s time to plant the NEW Beacon®impatiens in your shade gardens, containers and baskets. Native Area: Nursery hybrids; parent species are native to the New Guinea and the Solomon Islands. It comes in a wide colour range, including two-tone ‘Pink Star’ and ‘Orange Stripe’. To avoid the problem, grow impatiens that are disease free purchased from local growers. ... Fungicide rotation is a vital part of all Impatiens walleriana production and resistance management. Remember when summer shade gardens were ablaze with impatiens? Beginning in 2011, this fungal disease wiped out the seed-producing stock of commercial growers and caused the common impatiens (Impatiens walleriana) plant to vanish from garden centers. Flowers may reach 3 inches in size, attracting hummingbirds with nectar-rich flowers. (It only affects impatiens.) Joost Kos, Syngenta’s head of Research and Development, and Ton Groot, Senior Flower Breeder, spent 9 years developing this strain. The best position has morning sun and afternoon shade or good, dappled light. Sow seeds early indoors, about four months before your last frost, to enjoy the longest bloom time. Ideal for containers, hanging baskets, and a border edge, 'Balboufink' was named a 2015 All-America Selections winner, meaning this variety exhibits superior disease resistance, a long bloom time, and novel colors. As a result, leaves tend to stay moist for longer, which encourages the growth of spores. The spread of the fungal disease downy mildew put an end to that, and despite the introduction of interspecific hybrids, nothing quite filled the gap. New Guinea impatiens have a higher resistance to this disease. What is it about this new SunPatiens introduction that got the attention and recognition of All-America Selections judges? And then, the downy mildew epidemic changed the way we garden. Imara® impatiens. Impatiens downy mildew has been so destructive in many areas that it has made impatiens unusable as a garden ornamental. Impatiens tend to be susceptible to moisture stress. Fortunately, New Guinea impatiens (Impatiens hawkeri) appear to be tolerant or resistant to downy mildew. Photo: www.twipu.com In 2013, a fast-spreading disease—impatiens powdery mildew or IMP (Plasmopara obducens)—essentially wiped the garden impatiens (Impatiens walleriana), for over 40 years the world’s most popular annual, off the horticultural map, leaving gardeners struggling to find replacements. The downy mildew disease that affects Impatiens spp. Imapatiens walleriana continue to be the subset of impatiens that are affected by downy mildew but gardeners can circumvent the disease by planting improved New Guinea impatiens varieties. New Guinea impatiens (Impatiens x hawkeri) are reported to be tolerant of the disease. Now home gardeners will … Bounce White Impatiens. This downy mildew is unique to impatiens. A trial in Florida, planted in early January 2013, had impatiens flowering for 4 weeks before the disease took over. After trials that tested five thousand seedling impatiens plants, Syngenta Flowers has come up with a new variety called ‘Imara’™ XDR (Extra Disease Resistance). Bursts of color that are easy, disease resistant and time saving. Dimensions: Height: 1 ft. 0 in. Photo courtesy Syngenta Flowers. Learn tips for creating your most beautiful (and bountiful) garden ever. These are ideal for producing masses of low spreading colour. Look for three additional color choices in the Bounce series, including white, cherry, and bright coral. New Guinea impatiens need a daily water check on dry days in the summer, especially if they're growing in pots. Plant them in full sun and water daily in summer. Impatiens are one of the standby color selections for shady regions in the landscape. However, the work of plant breeders has led to the recent introduction of disease-resistant cultivars, which should see an upsurge once more in sales of this popular bedding plant. However, bedding Impatiens are susceptible to downy mildew. resistant strain. Fortunately, New Guinea impatiens (Impatiens hawkeri) appear to be tolerant or resistant to downy mildew. An upgrade of the Celebrette New Guinea pot impatiens (I. hawkeri), Clockwork has the ideal compact growth (25cm high and 30cm wide) for patio containers and planters and performs equally well in beds. Imara XDR Impatiens walleriana, Michelle Simakis. The first Impatiens walleriana with a high degree of resistance to downy mildew. This is a low-growing variety that makes for a good edging or bedding plant. The disease affects garden impatiens (Impatiens walleriana and I. balsamina), as well as native jewelweeds (I. pallida and I. capensis). In all respects, they mimic the traditional walleriana impatiens as fast-filling compact bedding plants, with a similar flower size and flowering … Some horticulturists now place the entire group under the I. hawkeri species designation. Here are nine vigorous varieties will thrive in your borders, window boxes, and hanging baskets this season. Unfortunately, since downy mildew is an airborne fungus-like disease, it spreads quickly and easily, and can overwinter in the garden, making gardeners fear planting impatiens in recent years. Imara XDR (photo right) is a new, extra disease resistant (XDR) line of Impatiens from Syngenta that will be available this summer. It’s compact and quick-growing and supplied in seedling trays in single colours or mixes. Even if the plants are disease free at the time of purchase, it is just a matter of time before the wind will spread the disease onto those plants. The Bounce series is immune to downy mildew and is named for its ability to "bounce" back after wilting in hot weather. This disease affects garden impatiens (Impatiens walleriana), double impatiens or garden balsam (I. balsamina), and the jewelweed species I. pallida and I. capensis. Outbreaks of downy mildew have been confined to Impatiens walleriana, the common bedding busy Lizzie. Customize Your Weather. “Susceptible Super Elfin varieties were planted in between Beacon and Imara in October,” explains Kathy Varney, product manager at Ball Straathof. While the disease devastated traditional impatiens, New Guinea impatiens survived because it is immune to the disease, as is SunPatiens, a hybrid developed by a Japanese seed company. NEW GENERATION IMPATIENS. Zesty orange hues bring sunshine to the summer garden, and pair well with hot red flowers or as a contrast to purple and blue blooms.' - 1 ft. 3 in. 3% of our global sales of Beacon Impatiens goes toward a lesser-known charity. GARY CHURCH: Mildew-resistant impatiens will save call to the plant coroner By Gary Church What to Expect in New Perennials From CAST 2019. Imara® impatiens. Trials conducted at Ball Straathof in Jo’burg, and various other locations around the world, have shown Beacon to be the more resistant variety at present. Impatiens tend to be susceptible to moisture stress. They are forgiving plants – the beauty of all impatiens. Both varieties do best in shade to semi-shade and should be planted in well-composted soil. In all respects, they mimic the traditional walleriana impatiens as fast-filling compact bedding plants, with a similar flower size and flowering season from early summer until the first frost. 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