Ice Cream Bean
Lathyrus odoratus
The Ice Cream Bean is a tropical heirloom tree producing elongated, pod-like fruits that ripen in approximately 90 days. The pods contain soft, creamy white pulp with a remarkable vanilla ice cream flavor and distinctive cotton candy texture that dissolves on the tongue. Native to Central and South America, this tree thrives in full sun with rich, well-draining soil. The defining characteristic is its unique taste profile—neither truly fruit nor dessert—making it a novelty choice for tropical gardens. Remarkably pest-resistant and easy to grow, it's prized by enthusiasts seeking unusual, conversation-starting tropical varieties.
Harvest
90d
Days to harvest
Sun
Full sun
Zones
2–11
USDA hardiness
Height
3-8 feet
Planting Timeline
Showing dates for Ice Cream Bean in USDA Zone 7
All Zone 7 tropical →Zone Map
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Ice Cream Bean · Zones 2–11
Growing Details
Zone-by-Zone Planting Calendar
| Zone | Indoor Start | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 3 | — | — | June – July | October – October |
| Zone 4 | — | — | June – July | September – October |
| Zone 5 | — | — | May – June | September – October |
| Zone 6 | — | — | May – June | September – October |
| Zone 7 | — | — | April – June | August – October |
| Zone 8 | — | — | April – May | August – September |
| Zone 9 | — | — | March – April | July – August |
| Zone 10 | — | — | February – April | June – August |
| Zone 2 | — | — | June – August | October – September |
| Zone 11 | — | — | January – March | May – July |
Complete Growing Guide
Ice Cream Bean sweet pea thrives when started indoors four to six weeks before your last spring frost, though direct sowing is equally successful once soil temperatures reach at least 55°F and frost danger has passed. Indoor sowing gives you a head start on blooms, while direct sowing works well in regions with longer growing seasons. Soak seeds for 24 hours before planting to improve germination rates, as this helps break down the seed coat and speeds sprouting.
Space Ice Cream Bean plants 6 inches apart along your trellis or support structure, planting seeds about half an inch deep. This variety performs best in rich, well-draining soil amended with compost or aged manure before planting. The soil pH should hover between 6.0 and 7.0 for optimal growth. Avoid heavy clay soils, which trap moisture and invite the root rot that this cultivar is susceptible to—excellent drainage is non-negotiable for Ice Cream Bean success.
Water consistently throughout the growing season, providing about one inch per week through rainfall or irrigation. Keep the soil moist but not waterlogged; soggy conditions are the primary threat to this variety's roots. Morning watering helps prevent fungal issues and allows foliage to dry quickly. Feed every three to four weeks with a balanced, water-soluble fertilizer once flowering begins, or use a slow-release formula at planting time. Avoid excessive nitrogen, which encourages leafy growth at the expense of those spectacular 2-inch blossoms.
The occasional scale insect may appear on Ice Cream Bean stems, particularly in warm climates. Monitor regularly and spray affected areas with insecticidal soap if infestations develop. Root rot remains the primary disease concern; this occurs in poorly drained soils and is difficult to treat once established. Prevention through proper soil preparation and careful watering is far more effective than any cure.
Ice Cream Bean grows tall, reaching 3 to 8 feet, so sturdy trellising is essential from the start. Install supports before or immediately after planting to avoid damaging roots later. Regular deadheading of spent flowers extends blooms well into summer and encourages the exceptional fragrance this variety is prized for. Succession planting every two weeks until mid-summer provides continuous color and blooms throughout the season.
The most common mistake gardeners make with Ice Cream Bean is underestimating its need for support. Many plant it without adequate trellising, resulting in sprawling, tangled plants that produce fewer flowers and are prone to disease. Install your support structure first, then plant around it. With proper support, consistent watering, and well-draining soil, Ice Cream Bean rewards you with weeks of vibrant, fragrant blossoms that attract hummingbirds and provide stunning cut flowers.
Harvesting
Harvest Ice Cream Bean pods when they reach full length of approximately 2 to 3 inches and display a creamy white or pale yellow color with slight give when gently squeezed, indicating the beans inside have developed their characteristic sweet, vanilla flavor. The pods should feel firm yet slightly yielding rather than hard or papery. This variety responds well to continuous harvesting, meaning regular picking of mature pods encourages additional flowering and bean production throughout the season rather than a single concentrated yield. For best results, harvest in the early morning after dew has dried but before afternoon heat sets in, as the beans maintain superior sweetness and texture at this time.
Type: Legume.
Edibility: Sweet pea fruits are inedible and poisonous to humans.
Storage & Preservation
Harvest Ice Cream Bean pods when they reach full size and the beans inside feel slightly soft to gentle pressure. Store freshly picked pods in a cool, humid environment between 50–60°F, ideally in a breathable container or perforated plastic bag to prevent moisture buildup that encourages rot. Whole pods will keep for 5–7 days under these conditions; extracted beans deteriorate more quickly and should be eaten within 2–3 days.
For longer storage, freezing works best. Blanch shelled beans briefly in boiling water for 2 minutes, cool in ice water, drain thoroughly, and freeze in airtight containers for up to three months. Dried beans become tough and mealy, losing the characteristic creamy texture entirely, so freezing is strongly preferred over dehydration. For smoothies and blended applications, frozen beans maintain their sweet, vanilla flavor well and can be used directly without thawing.
History & Origin
The Ice Cream Bean belongs to the Inga genus, a tropical legume with a long history of cultivation in Central and South America. While specific breeding records for this particular cultivar are sparse, the variety likely emerged from traditional cultivation practices rather than formal plant breeding programs, reflecting the common heritage naming patterns of heirloom fruits in tropical regions. The Ice Cream Bean's distinctive creamy, vanilla-flavored pulp has made it a staple in indigenous and local communities for centuries, with its popularity gradually expanding to home gardeners and specialty growers in temperate climates seeking unique tropical specimens.
Origin: Southern Italy, Sicily, Crete
Advantages
- +Exceptional fragrance and vibrant 2-inch blossoms attract hummingbirds reliably
- +Sweet vanilla-creamy flavor with unique cotton candy texture delights palates
- +Long blooming period provides extended harvest and continuous enjoyment
- +Easy to moderate difficulty makes growing accessible to most gardeners
- +Few pest problems except occasional scale insects require minimal intervention
Considerations
- -Root rot develops quickly in poorly drained or waterlogged soils
- -90-day maturity requires patience before first substantial harvests
- -Requires well-draining soil conditions or crop failure becomes likely
Companion Plants
Banana, Coffee, Cacao, and Citrus are the strongest pairings — they share Ice Cream Bean's soil pH window (5.5–7.0) and high moisture needs, so they pull from the same watering regime without competing oddly. Sweet Potato works as a low groundcover underneath, holding soil moisture without shading the canopy. Ginger, Turmeric, and Lemongrass stay in the top 12 inches of soil and don't crowd the bean's deeper roots. Black Walnut is the one to plant nowhere near here — it secretes juglone from its roots, a compound that interferes with cell respiration in many plants. Eucalyptus and Pine release different allelopathic compounds but cause the same result: stunted neighbors.
Plant Together
Banana
Provides wind protection and creates beneficial microclimate, similar water and nutrient needs
Coffee
Thrives in the filtered shade provided by ice cream bean, nitrogen fixation benefits coffee
Cacao
Benefits from nitrogen fixation and partial shade canopy provided by ice cream bean
Citrus
Benefits from nitrogen enrichment in soil from ice cream bean's root nodules
Sweet Potato
Ground cover that prevents soil erosion while benefiting from nitrogen fixation
Ginger
Thrives in partial shade and humid conditions created under ice cream bean canopy
Turmeric
Enjoys filtered sunlight and enriched soil from nitrogen-fixing companion
Lemongrass
Natural pest deterrent that thrives in similar tropical conditions
Keep Apart
Black Walnut
Produces juglone which is toxic to legumes and inhibits nitrogen fixation
Eucalyptus
Allelopathic compounds suppress growth of nearby plants including legumes
Pine
Acidifies soil significantly, competing root system, allelopathic needle drop
Nutrition Facts
Per 100g serving. % Daily Value based on 2,000 calorie diet. Source: USDA FoodData Central (FDC #168396)
Pests & Disease Resistance
Resistance
Generally disease resistant, very hardy
Common Pests
Few pest problems, occasional scale insects
Diseases
Root rot in poorly drained soils
Troubleshooting Ice Cream Bean
What you'll see, why it happens, and what to do about it.
Seeds fail to germinate after 21+ days in the ground
Likely Causes
- Soil temperature below 60°F — Ice Cream Bean is tropical and stalls in cold soil
- Hard seed coat preventing water uptake (common in Lathyrus odoratus)
What to Do
- 1.Soak seeds in room-temperature water for 24 hours before sowing to soften the coat
- 2.Wait until soil temps are consistently 65°F or above — use a cheap probe thermometer to check
- 3.Resow in a spot with better drainage and full sun exposure
Roots blackened and mushy at the base, plant wilting despite wet soil
Likely Causes
- Root rot from Phytophthora or Pythium spp. — both thrive in waterlogged, poorly drained beds
- Planting in heavy clay that holds standing water after rain
What to Do
- 1.Pull the plant — there's no saving a badly rotted root system
- 2.Amend the bed with coarse perlite or pine bark fines before replanting to improve drainage
- 3.Raise the planting site 6–8 inches into a berm or raised bed if your soil drains slowly
Sticky residue on leaves and stems, with small brown or tan bumps along the branches
Likely Causes
- Scale insects (likely soft scale, family Coccidae) — the bumps are the insects themselves, not a disease
- Ants farming the scale for honeydew, which also signals an active infestation
What to Do
- 1.Scrape off visible scale with an old toothbrush dipped in 70% isopropyl alcohol
- 2.Apply horticultural oil (neem or petroleum-based) at the label rate, coating stems thoroughly — repeat every 10–14 days for 3 applications
- 3.Cut off ant access to the plant; ants actively shield scale from predatory wasps and ladybeetles, so removing them lets natural enemies do real work
Pods present but stay small and don't swell to full size by day 90
Likely Causes
- Inadequate water during pod fill — high water needs go unmet during the critical 2–3 weeks after pod set
- Sowing too late so pods develop as days shorten and temperatures drop below 70°F
- Spacing tighter than 15 feet, crowding roots and cutting access to soil moisture
What to Do
- 1.Deep-water at the root zone 2–3 times per week during pod fill, targeting consistent moisture 6 inches down
- 2.Side-dress with a balanced compost or low-nitrogen fertilizer to support pod development without pushing leafy growth
- 3.Next season, direct sow no later than early June so pods can swell during the warmest stretch of summer
Frequently Asked Questions
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Growing Guides from Wind River Greens
Where to Buy Seeds
Sources & References
External authority sources used in compiling this guide.
See the Methodology page for how this data is sourced, what's AI-assisted, and known limitations.