The Downy Mildew Resilience of Impatiens Beacon and Glimmer

Discover the secrets of defeating downy mildew in your garden. Unveil its hidden dangers and learn how to pick the perfect Impatiens.

By: THURSD. | 29-05-2023 | 4 min read
Floral Education Garden Plants
Downy Mildew Resistance Impatiens header on Thursd

When it comes to combating downy mildew, selecting the right plant varieties is paramount. In the pursuit of downy mildew-resistant impatiens, breeders at Florensis have achieved remarkable success with the development of the Impatiens Beacon series and Impatiens Glimmer series. These exceptional cultivars have gained acclaim for their robust resistance to downy mildew, offering gardeners a solution that combines beauty and durability. Let's explore why the Impatiens Beacon and Glimmer stand out as benchmarks of downy mildew resistance:

What Is Downy Mildew?

Downy Mildew is a fungal-like organism that affects many species of plants and vegetables. Impatiens downy mildew (IDM) is a disease that affects Impatiens walleriana plants. It is a serious issue and has limited the use of impatiens in gardens and containers in recent years.

Symptoms are first seen on leaves near the tips of branches and include an irregular yellow-green discoloration of leaves. Stunting and reduced flowering are other common symptoms.

The most distinctive characteristic is a fuzzy white material that develops on stems, buds, and the undersides of leaves. In disease-favorable conditions (cool nights with long dew periods), downy mildew will spread rapidly, destroying leaf tissue without affecting stems or petiole.


Downy Mildew on Impatiens
Downy Mildew on Impatiens


Read more about downy mildew in this article.

So, what factors contribute to the impressive downy mildew resistance of the Impatiens Beacon?


Florensis downy mildew resistant Impatiens quote


The Impatiens Beacon Series: A Radiant Triumph Over Downy Mildew

The Impatiens Beacon series, bred by Florensis, represents a significant breakthrough in downy mildew-resistant impatiens varieties. These stunning cultivars possess an innate ability to thrive even in the face of downy mildew, making them an ideal choice for gardeners seeking both aesthetic appeal and plant health.

1. Diligent Breeding Selection

Together with its partner breeder PanAmerican Seed - who is the actual inventor of the Impatiens Beacon - Florensis's breeders have employed meticulous selection processes to identify and incorporate genetic traits that confer resistance to downy mildew. Through careful crossbreeding and rigorous screening, they have developed impatiens varieties with enhanced resilience against this destructive disease. The extensive breeding efforts have resulted in the creation of the Impatiens Beacon, which boasts exceptional downy mildew resistance.

2. Genetic Diversity and Adaptability

One key aspect of Florensis's breeding strategy is the incorporation of genetic diversity. By sourcing impatiens varieties from diverse gene pools, they have harnessed a wider range of genetic traits and resistance mechanisms. This genetic diversity enhances the adaptability of the Impatiens Beacon Series, enabling them to withstand various environmental conditions and resist the onslaught of downy mildew.


Impatiens Beacon in the shade
Beacon Impatiens offers high resistance to Impatiens downy mildew for healthy gardens all season, also in the shade.


The Impatiens Glimmer Series: Sparkling Defiance Against Downy Mildew

The Impatiens Glimmer series, originally bred by Ball SB and further developed by Florensis, represents a testament to their commitment to downy mildew resistance in impatiens. These captivating cultivars not only dazzle with their beauty but also offer remarkable resistance to downy mildew, providing gardeners with confidence and peace of mind.

What sets the Impatiens Glimmer apart in the realm of downy mildew resistance?

1. Comprehensive Disease Management

Florensis employs comprehensive disease management practices to ensure that the Impatiens Glimmer remains resilient against downy mildew. From meticulous monitoring to rigorous sanitation protocols, Florensis maintains a vigilant approach to preventing and controlling diseases. This proactive disease management strategy ensures that the Impatiens Glimmer series continues to thrive and display its captivating blooms, free from the threat of downy mildew.

2. Genetic Innovation and Selective Breeding

Florensis's breeders continuously push the boundaries of genetic innovation in their quest for downy mildew-resistant impatiens. Through selective breeding, they have identified and incorporated genetic traits that confer natural resistance to downy mildew. This strategic approach has resulted in the creation of the Impatiens Glimmer Series, which showcases not only exceptional beauty but also remarkable downy mildew resistance.


Impatiens Glimmer Bright Red in a pot
Impatiens Glimmer Bright Red


A Testament to Research and Dedication

The downy mildew resistance exhibited by both the Impatiens Beacon and Glimmer series is a testament to the extensive research, dedication, and expertise of the breeders at Florensis and its partner breeders. Their unwavering commitment to developing downy mildew-resistant impatiens has yielded cultivars that not only thrive in garden settings but also provide a sense of security and longevity to gardeners.

By incorporating these exceptional impatiens varieties into your garden, you can confidently enjoy their vibrant blooms without the constant worry of downy mildew infestation. The Impatiens Beacon and Impatiens Glimmer offer a ray of hope, empowering gardeners to create stunning displays while maintaining the health and vitality of their plants.

As gardeners, it is crucial to stay informed about the latest advancements in downy mildew-resistant varieties. By choosing cultivars like the Impatiens Beacon and Glimmer, you not only safeguard your garden but also contribute to the broader efforts of sustainable horticulture and disease management.


Impatiens Glimmer Appleblossom
Glimmer Appleblossom Double Impatiens was a UGA (University of Georgia, USA) Trial Gardens 2022 Classic City award winner.


With these plants, Florensis has unlocked a world of possibilities for gardeners, where the battle against downy mildew can be won with resilience, beauty, and the joy of a flourishing garden.

So, embrace the downy mildew-resistant Impatiens Beacon and Impatiens Glimmer, and let your garden shine with confidence, knowing that these remarkable cultivars will continue to thrive and enchant, defying the threats of downy mildew.


All images courtesy of Florensis.


Banner Impatiens Glimmer


Can't get enough?

Subscribe to the newsletter, and get bedazzled with awesome flower & plant updates

Sign up