Arcadia

Family: Brassicaceae Vegetable

Planting Schedule

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Arcadia broccoli brings a vivid, velvety crown of deep blue-green florets that feel dense and beautifully tight at maturity.

Expect a crisp, succulent bite with a sweet, clean flavor that shines in fresh garden moments and holds its character beautifully for roasting and steaming, as well as for bright sauces and quick pickling-style preparations. Grow Arcadia for dependable 70-day performance and a harvest that rewards careful attention with uniform, showy heads and tender side shoots.

Light: Full SunMaturity: 70 DaysHabit: Rosette

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Arcadia Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Apr 27th	May 25th	Aug 3rd – Aug 29th
Zone 2b	Apr 17th	May 15th	Jul 24th – Aug 25th
Zone 3a	Apr 17th	May 15th	Jul 24th – Sep 1st
Zone 3b	Apr 21st	May 19th	Jul 28th – Sep 21st
Zone 4a	Apr 17th	May 15th	Jul 24th – Sep 24th
Zone 4b	Apr 15th	May 13th	Jul 22nd – Sep 27th
Zone 5a	Apr 10th	May 8th	Jul 17th – Sep 30th
Zone 5b	Apr 6th	May 4th	Jul 13th – Oct 5th
Zone 6a	Apr 3rd	May 1st	Jul 10th – Oct 10th
Zone 6b	Mar 28th	Apr 25th	Jul 4th – Oct 16th
Zone 7a	Mar 23rd	Apr 20th	Jun 29th – Oct 20th
Zone 7b	Mar 13th	Apr 10th	Jun 19th – Oct 28th
Zone 8a	Mar 4th	Apr 1st	Jun 10th – Nov 5th
Zone 8b	Feb 23rd	Mar 23rd	Jun 1st – Nov 12th
Zone 9a	Feb 6th	Mar 6th	May 15th – Nov 26th
Zone 9b	Jan 12th	Feb 9th	Apr 20th – Dec 9th
Zone 10a	—	Oct 1st	Dec 10th – Feb 28th
Zone 10b	—	Oct 1st	Dec 10th – Feb 28th
Zone 11a	—	Oct 1st	Dec 10th – Feb 28th
Zone 11b	—	Oct 1st	Dec 10th – Feb 28th
Zone 12a	—	Oct 1st	Dec 10th – Feb 28th
Zone 12b	—	Oct 1st	Dec 10th – Feb 28th
Zone 13a	—	Oct 1st	Dec 10th – Feb 28th
Zone 13b	—	Oct 1st	Dec 10th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	45
Min Soil Temp (°F)	40
Min Night Temp (°F)	30
Harden Off (days)	6

Culinary Notes

Chef's Note

Arcadia’s tight, dense florets taste sweet and stay snappy, so they don’t turn to sulfurous mush when you push heat or time. Treat it like a crown: roast or steam hot-fast, then dress hard—citrus fat and salty umami cling to every crevice, especially on tender side shoots.

Best Uses

high-heat roasting until browned at the edges while keeping centers crisp
quick steam and finish with lemon-butter for a tight, vivid flavor
blanch-then-sauté with olive oil and chile for a fast, glossy coat
bright, quick pickling-style prep for snappy bite and color

Flavor Profile

sweet, clean broccoli flavor crisp, succulent bite dense, velvety florets tender side-shoot texture when cooking gently

Kitchen Pairings

lemon parmesan anchovy olive oil garlic-free chili heat butter

Frequently Asked Questions

Arcadia plants: what should I do if I see powdery mildew on the leaves?

Powdery mildew on Arcadia shows up as a white, floury coating on leaves that can spread quickly in humid weather. Remove and discard the worst affected leaves, then improve airflow by spacing plants properly and avoiding overhead watering. Spray a labeled sulfur or potassium bicarbonate product early in the morning and repeat according to the label, especially if conditions stay damp.

How often should I water Arcadia during the main growing phase to keep the right soil moisture?

During the main growth (roughly weeks 3–8 after germination), keep soil evenly moist but never waterlogged—aim for the top 1 inch to dry slightly between waterings. In most home gardens this is about 1–2 deep waterings per week, increasing to 2–3 during hot, windy spells. Use a finger test: if the soil is dry 1–2 inches down, water thoroughly until moisture reaches the root zone.

How can I tell when Arcadia is ready to harvest at about 70 days?

Arcadia is ready to harvest when the crop reaches full size and the produce shows its mature color and firmness (no longer looks pale or soft). Check the plants around day 70: if you can gently press and it bounces back, it’s mature; if it feels underripe or watery, wait a few more days. Harvest in the morning for best texture and store promptly to maintain quality.