Seeds + Growing

Grow what we grow.

The varieties in our installations were selected over years of Idaho trials — chosen for color depth, rib structure, skin durability and how they hold through a long dry autumn.

Heirloom pumpkin detail

The varieties

Jarrahdale

Slate blue-grey

Anchor and mid-tier pieces; exceptional against warm stone

100–110 days days to maturity
12–18 lbs
Prefers full sun and consistent early irrigation; cures beautifully

Silver Moon

Bright white

Clean white forms for neutral and sage palettes

95 days days to maturity
8–12 lbs
Shade fruit late in the season to hold white color

Cinderella (Rouge Vif d'Étampes)

Deep burnt orange

Low wide anchors at stair bases

105 days days to maturity
15–25 lbs
Needs space; harvest before the first hard frost

Long Island Cheese

Warm buff tan

Bridges warm and neutral palettes

105 days days to maturity
10–15 lbs
Excellent keeper; stores for months when cured

P3 Selection No. 1

Muted rust with grey blush

Developed for designer palettes

In development days to maturity
10–14 lbs
Selectively bred in Idaho; limited trial seed

Seed collections

P3 Heirloom Seed Collection

A curated set of the varieties we install most often.

$0

Seed ordering opens ahead of the spring planting window — join the notice list to be told first.

P3 Selection No. 1 Seed

Limited trial seed from our Idaho breeding rows.

$0

Seed ordering opens ahead of the spring planting window — join the notice list to be told first.

Spring Pumpkin Starters

Established starter plants, ready for Treasure Valley planting.

$0

Seed ordering opens ahead of the spring planting window — join the notice list to be told first.

Specialty Gourd Starters

Ornamental gourd starts for designers and small growers.

$0

Seed ordering opens ahead of the spring planting window — join the notice list to be told first.

Growing in the Treasure Valley

Direct sow after soil temperatures hold above 65°F, typically late May in the valley. Heirloom varieties need a longer runway than commercial jack-o’-lanterns, so start the longest-maturity types first.

Water deeply and infrequently, and keep foliage dry to limit mildew in our late-summer heat. Once fruit sets color, slip a board or straw beneath it to prevent ground rot.

Cure harvested fruit in a warm, dry, shaded space for ten to fourteen days. Cured heirlooms hold their color and structure far longer than field-fresh fruit — this step is the difference between a two-week display and a two-month one.

Read the journal