horticulture

Blossom of Rowan Sorbus acuparia.  Close up illustration of a cluster of flowers.

Rowan Sorbus aucuparia sprig showing opposite leaves and blossom.

Dahurian Larch Larix gmelinii tree showing krummholz symptoms due to arctic conditions Illustration from “The Treeline: The last forest and the future of the planet” by Ben Rawlence (publ. Jan 2022)

White Spruce Picea glauca tree showing bushy growth Illustration from “The Treeline: The last forest and the future of the planet” by Ben Rawlence (publ. Jan 2022)

Black Spruce Picea marinara tree showing krummholz symptoms due to arctic conditions Illustration from “The Treeline: The last forest and the future of the planet” by Ben Rawlence (publ. Jan 2022)

Downy Birch Betula pubescens tree showing krummholz symptoms due to arctic conditions Illustration from “The Treeline: The last forest and the future of the planet” by Ben Rawlence (publ. Jan 2022)

Crack willow tree Salix fragilis showing it’s bushy habit Illustration from “The Treeline: The last forest and the future of the planet” by Ben Rawlence (publ. Jan 2022)

Jack Pine Pinus banksia tree showing straggly lower branches Illustration from “The Treeline: The last forest and the future of the planet” by Ben Ralence (publ. Jan 2022)

Siberian larch Larix sibirica tree Illustration from “The Treeline: The last forest and the future of the planet” by Ben Ralence (publ. Jan 2022)

Balsam poplar Populus balsamifera tree showing thinner branches due to the krummholz effect on northern trees pen & ink botanical illustration Illustration from “The Treeline: The last forest and the future of the planet” by Ben Ralence (publ. Jan 2022)

Variegated geranium leaf, Geranium Mrs Pollock, showing Zonal colouration and pigment variegation, including area of red anthocyanin.

Lungwort Pulmonaria officianalis showing distinctive spotted leaves

Willow anthracnose Drepanopeziza sphaerioides on Weeping willow foliage Saliz babalonica

Small-leaved or Small leaved Lime Tilia cordata sketchbook page

Silver birch Betula pendula sketchbook page with a focus on the leaves

Pear sprig with blossom, leaves and fruit Pyrus communis

Oak sudden death Phytophthora ramorum fungi and algae pest on Oak tree Quercus

Oak spangle galls from wasp Tilia platyphyllos and Silk button galls from wasp Neuroterus numismalis on Oak leaf Quercus robu

Oak Quercus robur sketchbook page including flowers and young leaves

Magnolia sprig Magnolia grandiflora in flower with leaves not yet out

Lime leaf nail galls Lime Tilia europaea caused by the mite Eriophyes tiliae

Bay sucker Lauritrioza alacris psyllid on Bay Laurus nobilis

Sea Buck-thorn Hippophae rhamnoides shrub pen and ink with colour wash

Sea Buckthorn shrub Hippophae rhamnoides.  Pen and ink illustration shows elongate leaves, low shrubby growth habit, and berries.