How to Grow Rocambole USA
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Rocambole (Allium sativum var. ophioscorodon) — herbaceous perennial, grown as an annual crop.
Unlike an annual crop, the work here is front-loaded into establishment: get the planting and the site right and the same plants crop for several seasons.
Core growing advice on this page is checked against named horticultural sources — see References.
Rocambole (Allium sativum var. ophioscorodon)
3 sources cited · Verified
Growth Stages
| Stage | BBCH | Notes |
|---|---|---|
| Planting cloves | 0 | Separate individual cloves from the bulb and plant pointed-end up in late autumn or early winter. RHS: 15cm apart, tips 2.5cm below the surface. NC State: 2-3in (5-7.5cm) deep, 6-8in apart -- both figures kept, not averaged. Needs 4-6 weeks to establish before the ground freezes. |
| Root establishment & cold period | 3 | Roots develop in the cool, moist autumn soil, forming a dense network beneath each clove before winter. A cold period afterward is needed for the bulb to develop quality cloves the following season -- skipping it produces a poor bulb even with everything else right. |
| Scape formation | 6 | Hardneck garlic sends up a distinctive coiled flower stem (scape), unlike softneck types. Many growers cut the scape once it curls to redirect the plant's energy into bulb size rather than seed production -- the scape itself is edible. |
| Harvest & curing | 8 | RHS: harvest early summer once foliage turns yellow. NC State: once about half the leaves have turned brown. Cure in a warm, dry, shaded spot; once leaves are fully dry, trim roots, outer layers and top growth, then store cool and dry, never refrigerated. Rocambole keeps only until mid-winter -- shorter than other garlic types. |
Quick Facts
| Factor | Value |
|---|---|
| Soil texture | Chalk, sand or loam (RHS) |
| Drainage | Moist but well-drained, loose and fertile |
| Lifecycle | herbaceous perennial, grown as an annual crop |
| Edible parts | bulbs, scapes |
At a Glance
Harvest & Storage
When to pick: RHS: harvest early summer once the foliage turns yellow. NC State: harvest when about half the leaves have started turning brown. Cure in a warm, dry location out of direct sunlight; once leaves are fully dry, trim them along with the roots and outer layers.
Storage
Store cool and dry, never refrigerated. Rocambole keeps the shortest of any garlic type -- only until mid-winter (RHS) -- the trade-off for its stronger flavour compared with longer-storing continental hardnecks and softnecks.
Diseases
Pests
Rocambole, Clove to Scape
Plan your Rocambole planting
When to sow and plant Rocambole depends on your own frost dates. Check the USA vegetable planting calendar. To work out where it fits in your beds, sketch your plot in the free Garden Layout Planner.
Growing Rocambole in another region
Sowing dates, frost timing and local advice differ by country. Use the guide for where you garden.
Sources
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Erect perennial bulb, 1.5-2ft tall, 6-9in wide. Hardneck garlics produce a coiled flower stem (scape); rocamboles specifically have alternating large and small cloves, easier to peel and more pungent but shorter storage life than continental hardnecks. Plant cloves 2-3in deep, 6-8in apart; needs 4-6 weeks to establish before the ground freezes. Full sun, loose fertile well-drained soil, mulched. Harvest when about half the leaves have turned brown; cure in a warm, dry, shaded spot, then store cool and dry, never refrigerated. No significant pest/disease problems typical, though bulb rot can develop in overly wet soil and bulb mites may occasionally occur.
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US extension source: plant garlic from late September to November, cloves 2-3 in deep in rows 6-10 in apart with cloves 3-4 in apart in the row; each planted clove produces one bulb of 10-15 cloves; harvest when tops begin to yellow or fall over but before completely dry; cure the whole plant in a shady warm spot 1-2 weeks until skins are papery and roots dry; store at 32-40°F, dry, avoiding freezing. States that elephant garlic is very mild, stores poorly and is more closely related to leek than to garlic.
These 2 sources are specific to this region. The full list of 3 sources behind this guide (NC State Extension, Royal Horticultural Society, Utah State University Extension) is in the references of our UK guide to rocambole; they describe the plant itself, which is the same wherever it grows.
Frequently Asked Questions
What problems affect rocambole?
Our data links 2 diseases and 2 pests to this crop. See the sections above for each one and how to manage it.
Plan next season before the problems start
Almost everything on this page resolves to your own frost dates rather than the calendar — the last spring frost moves by roughly two months between zone 3 and zone 10. The USA Garden Planner works from your zone so the timing is already decided before the season starts.
Get the USA Garden Planner →Instant PDF download · Written for US growing conditions
How this guide is put together
The growing data on this page — sowing windows, pests, diseases, soil and site requirements — comes from named horticultural sources, listed in References below, checked against USDA hardiness-zone and frost-date data, with Cooperative Extension sources cited directly where one exists for a crop. An automated pipeline assembles that verified data into the page you're reading: it selects which facts to lead with and builds the surrounding prose and layout. It does not invent a date, a source or a number — where a verified value for a field isn't available, the page leaves it out rather than guessing. A person reviews and publishes each page; nothing goes live unverified.
Last verified 2026-09-02
Related guides
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Growing advice for your part of the USA
Timing and conditions change a lot inside one country. These guides cover frost dates and growing seasons region by region.
Where To Go From Here
Take this crop from reading into a written plan for your own beds.
Keep going
Plan the next step
Use the printable SoilCommander planner for your region to turn this guide into sowing dates, bed layouts and weekly garden tasks.