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Yuca

Root
Long warm tropical season
Full sun

Also known as: Cassava · Manioc · Manihot esculenta

Varieties

2 types of yuca

When & where

Season
Long warm tropical season — 8–12 months frost-free
USDA zones
Perennial in zones 9–11; annual/greenhouse elsewhere
Sun
Full sun
Start indoors
Traditionally grown from stem cuttings — start seeds 8–10 weeks before last frost if available
Direct sow outdoors
After all frost when soil is above 75°F — cuttings preferred over seed
Days to harvest
240–365 days — harvest tubers before first frost

Germination

Germination time
14–30 days
Soil temperature
80–90°F (27–32°C)

Spacing & depth

Sow depth
1/2" (12 mm) for seed; 6 in horizontal for stem cuttings
Seed spacing
Start in pots; transplant to 3 ft
Mature plant spacing
3–4 ft (90–120 cm)
Row spacing
4–5 ft (120–150 cm)

How to plant

Cassava is almost always propagated from 8–12 in stem cuttings pushed halfway into warm soil, not seed — seed is rare and slow. If you have seed, scarify and soak 24 hrs, then start indoors in bottom heat. Plants become 6–10 ft woody shrubs; dig the fat starchy tubers at the end of the season.

Grower's tip

CRITICAL — raw cassava contains cyanogenic compounds and must be peeled, soaked, and thoroughly cooked before eating. Sweet varieties need boiling; bitter (industrial) varieties need extended processing. Not a beginner root crop outside the tropics.

Soil preferences

Soil type

Deep, loose, stone-free sandy loam — rocks and clumps fork roots.

pH range

6.0–7.0

Amendments

Avoid fresh manure or heavy nitrogen (causes hairy or forked roots). A light compost and rock phosphate work well.

Watering

Frequency

Steady moisture — 1 in per week. Uneven watering causes cracking.

Method

Deep soaking; avoid shallow daily watering that keeps roots near the surface.

Over vs. under

Overwatered: cracked or rotted roots, foliage disease. Underwatered: woody, hot-flavored, or bitter roots.

Top-water or bottom-water?

Prefers top-watering — Top-water at the base. Wet foliage spreads late blight and early blight; keep leaves as dry as possible.

Temperature tolerance

Ideal daytime air temp

60–75°F (15–24°C)

Ideal nighttime air temp

45–65°F (7–18°C)

Frost sensitivity

Carrots, parsnips, beets sweeten after frost. Storage roots can often overwinter in the ground under heavy mulch.

Container growing

Container-suitable?

Possible with the right cultivar

Recommended pot size

12+ in deep for full-size carrots and parsnips; 8 in deep is fine for radish and short carrots

Notes

Pick short or round cultivars (Parisian carrots, Chioggia beets) for shallow containers.

Succession planting

Radish every 2 weeks. Carrots and beets every 3–4 weeks spring through late summer.

Detailed harvesting

Loosen soil with a fork before pulling to prevent snapped tops. Twist off greens 1 in above the crown for storage; leave 1 in of stem on beets to prevent bleeding.

Post-harvest storage & preservation

Trim tops; store unwashed in damp sand or perforated bags in the fridge or root cellar at 32–40°F. Most root crops keep 3–6 months.

Culinary, medicinal & other uses

Fresh, roasted, fermented (kraut, kimchi), pickled. Tops of beets, radishes, and turnips are edible greens.

Medicinal or traditional uses are shared for interest only — this is not medical advice. Consult a qualified professional before using any plant medicinally.

Seed saving

Pollination

Biennial and insect-pollinated. Root crops cross widely (carrots cross with Queen Anne's Lace).

Isolation needs

1/2 mile in the open or use cage with introduced pollinators.

How to save

Overwinter the best roots; replant in spring; collect the dry umbels/seed stalks in year 2.

Your zone's planting calendar

Pick your USDA hardiness zone and we'll estimate the key dates for yuca in your area. These are regional averages — always check your own last-frost forecast before sowing.

From your kitchen — grow yuca from what you already have

Root crops are usually biennials — the root is year 1, the seed is year 2. Store your best roots over winter, replant in spring.

  1. 1At harvest, save 5–10 of the best roots and store them cool, damp, and above freezing.
  2. 2In early spring, replant them tops-up at soil level.
  3. 3They'll bolt, flower, and set seed heads later that summer.
  4. 4Cut dry heads into a bag, rub free, sieve, and store cool and dry.

Storage: 3–5 years dry for most root seed.

My Yuca notes

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