
Garden lupin Lupinus regalis habit
Garden lupin Lupinus regalis habit showing a red and yellow variety

Persian Hogweed and Giant Hogweed comparison
Persian Hogweed Heracelum persicum and Giant Hogweed Heracelum mantegazzianum comparison with info on flower shape, umbel shape, and leaf differences

Milkweed Asclepias syriaca sketchbook study
Milkweed Asclepias syriaca sketchbook study page with written notes and info on seed pods, flowers, roots, and seeds

Tree of Heaven Ailanthus altissima habit
Tree of Heaven Ailanthus altissima habit drawing showing mature tree in flower

Small Balsam Impatiens parviflora habit
Small Balsam Impatiens parviflora habit drawing of a clump of plants

Persian Hogweed Heracleum persicum habit
Persian Hogweed Heracleum persicum in flower showing habit and growth form

Milkweed Asclepias syriaca habit
Milkweed Asclepias syriaca habit drawing showing two plants in flower

Lupin Lupinus polyphyllus habit
Lupin Lupinus polyphyllus habit drawing showing palmate leaves and flower spikes

Japanese knotweed Fallopia japonica habit
Japanese knotweed Fallopia japonica habit drawing showing thicket of the plant

Japanese Hop Humulus japonica habit
Japanese Hop Humulus japonica habit drawing showing how the plant climbs and spreads

Himalayan balsam Impatiens glandulifera habit
Himalayan balsam Impatiens glandulifera habit drawing showing entire plant

Canada Goldenrod Solidago canadensis habit
Canadian Goldenrod Solidago canadensis habit drawing showing entire plant

Japanese rose Rosa rugosa habit drawing
Japanese rose Rosa rugosa habit showing mature bush in flower

Japanese knotweed and Himalayan balsam seedlings
Japanese knotweed Fallopia japonica and Himalayan balsam Impatiens grandiflora seedling comparison

Japanese knotweed Fallopia japonica seedling
Japanese knotweed Fallopia japonica seedling showing rounded leaves and pink stem

Japanese Rose Rosa rugosa sketchbook study
Japanese Rose Rosa rugosa sketchbook study page and habit sketch

Japanese Rose Rosa rugosa leaflet
Japanese Rose Rosa rugosa graphite leaflet showing shiny leaflets and dentition on margin

Japanese Rose Rosa rugosa rosehip cross section
Rosehip cross section sketchbook study showing seeds and remnants of sepals

Skunk Cabbage Lysichiton americanus sketchbook study
Skunk Cabbage Lysichiton americanus sketchbook study page showing detail of flower and plant

Skunk Cabbage habit drawing
Skunk Cabbage habit drawing showing a clump of plants with distinctive yellow spathes

Skunk Cabbage Lysichiton amaericanus leaf
Skunk Cabbage Lysichiton maericanus graphite drawing leaf with person to show scale

Tree of Heaven AIlanthus alitissima bark comparison
Tree of Heaven Allanthus alitissima comparing bark of mature tree (on left) with young tree (on right)

Garden pea Pisum sativa
Garden pea Pisum sativa showing leaves, tendrils, peas in a pod, flowers and closed pods

Giant knotweed Fallopia sachalinensis
Giant knotweed Fallopia sachalinensis showing numerous drooping flowers, large leaves, stem section and detail of the orange underground rhizome