flowers Himalayan Balsam Impatiens glandulifera invasive pest pink plants stand weed flower plant pod balsam England Himalayan impatiens summer Sussex touch-me-not wild Balsam apple Balsam pear bitter Bitter cucumber Bitter Gourd bitter melon caraille carilley creeper Cucurbitacea earth farm farm fresh fresh green health food healthy India Karela karnataka Light green Momordica charantia Mud natural nature nutrition produce red subcontinent traditional medicine Udupi vegetable vine floral petal yellow autumn boundary bushes edge english field Great Britain hedge hedgerow hips landscape margin meadow pastoral peaceful rural shrubs tranquil trees balsam fir berlin branch branches closeup Columbian spruce environment forest germany grunewald Jack pine landscapes Larix lyalliiSubalpine Larch lodgepole pine pine pine cone pine cones pine-needle pine-needles pines shortleaf black spruce shortstraw pine tree White pine wood Yellow fir Asian-cuisine balsam-pear bitter-gourd bitter-melon bitter-squash bumps bumpy cook cooking crunchy Cucurbitaceae cultivar distinct distinctive edible folk-remedy food fruit gourd herbaceous herbal-medicine melon momordica-charantia stir-fries tendril-bearing-vine variation varieties variety vine-fruit warty-exterior