Silverleaf nightshade Native to North America, silverleaf nightshade is a deeprooted summer growing perennial plant from the Solanaceae family It was first found in Australia in 1901 at Bingara, New South Wales and is now found throughout most parts of New South Wales, South East Queensland, Victoria, South Australia and Western AustraliaSilverleaf nightshade ( Solanum elaeagnifolium ) Print Search/browse other weeds Silverleaf nightshade grows in summer It grows in dense colonies and is very difficult to controlSilverleaf nightshade Class A noxious weed silverleaf nightshade Noxious weed seed and plant quarantine Negative On , CaptMicha from Brookeville, MD (Zone 7a) wrote This is horrible weed that pops up in flower beds You can pull Silverleaf Nightshade Aggieturf Silverleaf nightshade weed