Shallow wall arbours designed to mirror the peaked line of the garage roof would add architectural detail. And because the front entrance is disproportionately small in relation to the long house facade, modestly widening the welcome area with flat, staggered, straight-cut stones will create a more comfortable, practical entrance. There isn't room for additional boulders by the door (large boulders look most natural when arranged in groups of two or three), but arranging the flat stones around the existing one (and filling gaps with small gravel) would help provide a frame of similar material.

Planting a shrubbery hedge perpendicular to the long house will help to anchor it on the lot, while the neutral stucco walls would be a good foil for a deep maroon chokecherry tree. To keep garden maintenance to a minimum, use smaller-scale and dwarf plants that won’t overgrow their spaces; shrubs and perennial groundcovers will offer blooms all summer.
Plants to use:
All dimensions are height x width.
'Rosy Returns' dwarf daylily
(Hemerocallis 'Rosy Returns') 45 cm x 60cm, s f, Zone 3
'Blue Heaven' juniper
(Juniperus scopulorum 'Blue Heaven') 4 m x 1.5 m, s, Zone 3
'Dart's Gold' ninebark
(Physocarpus opulifolius 'Dart’s Gold') 1.2 m x 1.2m, s, Zone 3
Bristlecone pine
(Pinus aristata) 1.5 m x 1.5m (if pruned), s, Zone 3
'Big Tuna' mugo pine
(Pinus mugo var. rostrata 'Big Tuna') 1.5 m x 1 m, s, Zone 3
'Goldfinger' cinquefoil
(Potentilla fruticosa 'Goldfinger') 60 cm x 60cm, s, Zone 3
'Schubert' chokecherry
(Prunus virginiana 'Schubert') 5.5 m x 5 m, s, Zone 3
Dwarf American cranberry
(Viburnum trilobum 'Compactum') 1.5 m x 1.5m, s f, Zone 3