OSC White Imara Hybrid Impatiens. Stronger and more resistant to downy mildew than ever before, new Imara Impatiens Walleriana are bringing back your favourite bedding plant. During intensive, trialing, Imara out-performed other varieties even when exposed to the disease.  Enjoy summer long performance from these robust plants in addition to their strength against downy mildew. Ideal for moderate sun locations and perfect for shaded gardens rain or shine. Blooms all summer long, surviving until first frost.