Removing Invasive Plants
May 2019 - Heavy impatiens infestation

Removing Invasive Plants

Despite the Covid epidemic, we continue to work hard to remove both ivy and impatiens parviflora (small flowered touch-me-not).

Our members spent 27 hours from January to March removing ivy. We focused on the  trees in the Brunette River Conservancy behind the Cariboo Christian Fellowship church.

Ivy on Trees
January- trees with heavy ivy burden
Tree Heroes
Tree Heroes
Dead ivy on trees
July – ivy on the trees is dead

In May and June our members worked in small, physically distanced groups for a total of 39 hours to remove Impatiens parviflora. We have made great headway along the Interurban  trail! Areas that were thick with parviflora last year had much fewer impatiens this year  and many more native plants growing. We were able to remove the impatiens from areas that we never got to last year. Great work and huge thanks to everyone who helped out!

Impatiens infestation
May 2019 – Heavy impatiens infestation
Impationes removal July 2020
July 2020 – after 2 seasons of removing invasive impatiens

 

The areas of greatest concern are the trails  used by mountain bikers — the large knobby  tires collect soil and impatiens seeds and  move them around to new areas. Also, the  construction of new (unsanctioned) jump  trails removes native vegetation and opens  bare soil — a perfect place for impatiens seeds to start growing!

Pathway

Freaky Facts about Impatiens parviflora
● annual, native to Asia, prefers shady forests
● crowds out native plants
● produces two kinds of flowers: self fertilizing (doesn’t need pollinators) and small showy yellow flowers that require pollinators
● flowers only have a tiny amount of nectar so they don’t provide enough food for native pollinators
● each flower produces a seed pod containing up to 5 seeds.
● one large plant can produce several hundred seeds
● when ripe, seed pods will explode when touched, shooting seeds 1-2 m away
● seeds can survive in the soil for more than a year
● seeds get moved around on tires, footwear, animals and birds