100days to harvest
7-14 daysdays to germinate
Z7–10USDA zones
Easydifficulty
Heirloom

Sowing

Direct sow after last frost or start indoors 6-8 weeks before last frost

Cultivation

Sun
Full sun (6+ hours)
Water
Regular, keep soil consistently moist during growing season
Soil
Well-drained loam, moderately fertile
Spacing
24-36 inches
Height
3-6 feet
Season
Tender Perennial

Appearance & flavour

Colour
Silver-green with pale blanched stalks
Shape
Sharply lobed and serrated leaves, thistle-like flowers
Flavour
Similar to artichoke with a mild, slightly nutty taste when blanched and cooked.

In the kitchen

Boiled as side vegetable, addition to stuffing, soups and stews

Pests, disease & resistance

Pests
Slugs, snails, carrot rust fly
Diseases
Powdery mildew, root rot in poorly drained soils

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
3April – MayJune – July—July – October
4March – AprilJune – July—July – October
5March – AprilMay – June—June – October
6March – AprilMay – June—June – November
7February – MarchApril – June—June – November
8February – MarchApril – May—May – December
9January – FebruaryMarch – April—April – December
10JanuaryFebruary – April—April – December

Companion planting

8 beneficial pairings indexed for this variety, 3 to avoid.

TomatoesRosemary repels tomato hornworms and other pests that damage tomatoes
CabbageRosemary deters cabbage moths, cabbage loopers, and other brassica pests
CarrotsRosemary repels carrot flies and helps improve carrot growth
BeansRosemary attracts beneficial insects that help with bean pollination
SageBoth Mediterranean herbs have similar growing requirements and complement each other
ThymeCompatible growing conditions and both help repel garden pests
LavenderSimilar water and soil requirements, both attract beneficial pollinators
MarigoldsBoth repel harmful insects and attract beneficial predatory insects

Avoid

CucumberRosemary can stunt cucumber growth and affect fruit development
LettuceRosemary's strong oils can inhibit lettuce germination and growth
PumpkinsAllelopathic compounds from rosemary can reduce pumpkin vine vigor

Nutrition (per 100 g)

Calories (per 100 g)
23
Protein (g)
3.15
Fat (g)
0.64
Carbohydrate (g)
2.65
Fibre (g)
1.6
Sugars (g)
0.3
Vitamin A (µg)
264
Vitamin C (mg)
18
Vitamin E (mg)
0.8
Vitamin K (µg)
415
Vitamin B6 (mg)
0.155
Folate (µg)
68
Calcium (mg)
177
Iron (mg)
3.17
Magnesium (mg)
64
Phosphorus (mg)
56
Potassium (mg)
295
Zinc (mg)
0.81
Selenium (µg)
0.3

Where to buy seed and equipment

Some links are affiliate links. If you buy through them we may earn a commission at no extra cost to you.

Growing it? There is a full cultivation guide at the herbs growing guide.

Cultivar facts compiled from public horticultural references including USDA GRIN and NC State Extension. Descriptions are original to this catalogue.

DarkGrow forum

Grown Porto Spineless?

Post a crop report — day counts, reservoir readings, what worked. Variety-specific logs are the most useful thing on the forum.

Similar varieties

Other herbs with a comparable time to harvest, so a season that suits Porto Spineless suits these too.

Browse all 104 herbs