When to plant garlic in Siena: 28 October – end of December

In Siena, garlic: plant from 28 October to the end of December. For planting stock, the places nearby include Brico & Garden (garden centre, 3 km) and Mundi (garden centre, 3 km); addresses and opening hours are below.

Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.

The average daily temperature here stays above 0 °C all winter, and at least two months average 10 °C or less: the cold garlic needs, one to two months at 0–10 °C (RHS). The two-month threshold is our rule of thumb. Sources: UVM Extension, UNH Extension, RHS.

Garlic in Siena: soil, season and weather

Garlic goes into the ground in Siena from 28 October to the end of December; the window opens a month before the first autumn frost. No month averages below 0 °C at night; the coldest nights, in January, average 1.5 °C.

Planting	28 October – end of December
First autumn frost	27 November
Coldest nights	January, 1.5 °C
Soil back at 5 °C in spring	already in the first week of January
Harvest (card)	about 8 months after planting: July
Daylight	10:29 on 28 October
Daylight at the winter solstice	8:58

Garlic in Siena: care after planting

Planted on 28 October: in the first weeks water every 7 days.

Feeding, by the card’s schedule from that day:

28 October — feed: nitrogen
25 November — feed: nitrogen

Pests and diseases of garlic to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Garlic in nearby cities

Around Siena, Livorno is 27 days earlier and San Marino 15 days later.

City	Distance	Date	Difference
Arezzo	47 km	22 October – end of December	6 days earlier
Florence	50 km	28 October – end of December	same day
Livorno	84 km	1 October	27 days earlier
Pisa	87 km	19 October – end of December	9 days earlier
Perugia	89 km	26 October – end of December	2 days earlier
San Marino	113 km	12 November – end of December	15 days later

Where to buy garlic for planting in Siena

Planting stock goes into the ground from 28 October to the end of December; buy it before that. Within 15 km of Siena OpenStreetMap lists 3 garden centres, 2 farm-supply shops, 4 plant nurseries, 6 markets and 1 farm shop (collected 27 October 2026).

Mundi — garden centre
Viale Europa 51, 53100 Siena · 3 km · shop.mundi.it
Brico & Garden — garden centre
Via delle Arti 27, 53100 Siena · 3 km · bricook.it
Mercato dell'Antiquariato — market
Piazza del Mercato, 53100 Siena · Sun[3] · 0 km
Mercato delle Merci — market
Viale Venticinque Aprile, 53100 Siena · Wed 08:00–13:30 · 1 km

Questions