How to Grow Huauzontles Canada | Complete Growing Guide

At a Glance

Quick Facts

Factor	Value
Soil pH	6 - 7.5
Sunlight	6-6 hours direct sun
Soil texture	light, medium or heavy soil, moderately fertile (PFAF, Pumpkin Beth)
Drainage	well-drained
Lifecycle	annual
Edible parts	leaves, flower clusters, seeds

Soil & Growing Conditions

Water: prefers moist soil (PFAF)

Soil pH range

6 7.5

Span reflects genuine variation between the cited authorities, not a single agreed figure.

Growth Stages

Stage	BBCH	Notes
Sowing	0	Sow seed spring in situ after the last frost; germination is normally very rapid, though seedlings resemble fat hen weed (PFAF, Pumpkin Beth).
Spacing/thinning	1	Space plants 15-20cm (6-8in) apart (Pumpkin Beth).
Leaf growth	3	Grows upright and bushy to 3-5ft tall; leaves harvestable as a vegetable after 7-10 weeks, with excellent heat tolerance (Pumpkin Beth).
Flowering and seed harvest	8	Flowers July to October, seeds ripening August to October; immature flower buds are the prized harvest, resembling small broccoli florets (PFAF, Pumpkin Beth).

Harvest & Storage

When to pick: Leaves can be harvested as a vegetable after 7-10 weeks; the prized immature flower buds, resembling small broccoli florets, are harvested for traditional Mexican dishes. Raw leaves should be eaten only in small quantities due to saponin and oxalic acid content (Pumpkin Beth, PFAF).

Diseases

Quinoa downy mildew

moderate

Peronospora variabilis

Inferred, not source-confirmed for this specific species: same genus (Chenopodium) as the already-published Quinoa, which lists this disease.

Pests

Aphids

low

Aphididae (various spp.)

Inferred, not source-confirmed for this specific species: same genus (Chenopodium) as the already-published Quinoa, which lists this pest.

Lygus bug

moderate

Lygus spp.

Inferred, not source-confirmed for this specific species: same genus (Chenopodium) as the already-published Quinoa, which lists this pest.

Huauzontle, Aztec Broccoli

A distinct species from Quinoa

Huauzontle (Chenopodium berlandieri subsp. nuttalliae) shares its genus with the already-published Quinoa (Chenopodium quinoa) but is a genuinely distinct species -- also called Aztec broccoli or red Aztec spinach.

Immature flower buds, prized like broccoli

The plant's most prized part is its immature flower buds -- effectively immature seed heads, often likened to small broccoli florets.

Excellent heat tolerance

Noted for excellent heat tolerance, making it a good spinach substitute once true spinach bolts in summer heat.

Central to traditional Mexican dishes

Historically cultivated in Mexico for its edible seeds and flowering shoots, central to many traditional dishes.

Watch for saponins and oxalic acid

Contains saponins and oxalic acid -- those with rheumatism, arthritis, gout, kidney stones, or hyperacidity should use caution; raw leaves should only be eaten in small quantities.

References

1. PFAF (Plants For A Future) -- Tier 2, used as the primary source as no RHS or dedicated Tier-1 growing profile exists for this species, explicitly disclosed - Chenopodium nuttalliae Huauzontle, Nuttall's goosefoot

   An annual reaching 0.6m (2ft) tall, flowering July-October, seeds ripening August-October, hermaphrodite and wind-pollinated. Native to southern North America, Mexico. Cannot grow in shade, requires full sun. Soil: light, medium or heavy, mildly acidic to mildly alkaline pH, prefers moist soil. Sow seed spring in situ; germination is normally very rapid, but seedlings resemble fat hen weed, requiring careful identification while weeding. Easily grown in most soils, preferring moderately fertile conditions; historically cultivated in Mexico for edible seeds and flowering shoots; potentially a very productive crop. Edible leaves (cooked), flower clusters (cooked, resembling small broccoli florets), and seeds (cooked). HAZARD: contains saponins and oxalic acid -- those with rheumatism, arthritis, gout, kidney stones, or hyperacidity should use caution; raw leaves should only be eaten in small quantities. No pests or diseases documented in this source.

1 independent sources are cited for this crop. Where they disagree - soil pH is the clearest case - every figure is preserved rather than averaged into false precision.