Safe to Plant

Bleeding heart · Santiago de Querétaro, Querétaro, Mexico

When to sow bleeding hearts in Santiago de Querétaro

Main outdoor window

5 Dec - 14 Jan

The window this page is built around.

Timed from last spring frost

28 January

In Santiago de Querétaro, on your chosen risk.

Ready to pick

1 Apr - 30 Jun

If you plant at the start of the window.

The average last frost. Half of all years are later than this.

Step by step in Santiago de Querétaro

Each window is a range, not a single day. Earlier in the range buys you a longer season; later in it buys you a safer one.

Plant the crowns

5 Dec - 14 Jan

Any time the plant is dormant and the ground is neither frozen nor waterlogged: after leaf fall in autumn, or at the end of winter before growth restarts.

In flower

1 Apr - 30 Jun

Frost tolerance
Very-hardy
Damaged below
-35°C (-31°F)
First crop
Year 2
Hardy to
Zone 3a–8a
Spacing
50 cm
Sowing depth
50 mm (2 in)
Sun
Partial

Bleeding hearts through the year

Against the frost risk in Santiago de Querétaro

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Frost risk Plant Harvest Today

Why these dates

Plant dormant crowns in autumn or very early spring, 5cm deep. Site it where the summer dieback will not leave a visible hole - behind a hosta or a fern is the usual answer. Do not water it in the hope of keeping the foliage; the dormancy is deliberate.

Hardy to -35C. Emerging shoots are brittle and damaged by hard late frosts, though the plant recovers. Requires a cold winter and does not grow well above zone 8.

Bleeding hearts are planted once and then left in place, so there is no sowing offset to resolve. What matters in Santiago de Querétaro is the shape of the year: this crop is dormant through the winter and is planted while it sleeps, any time between leaf fall in autumn and the restart of growth in spring, so long as the ground is neither frozen nor waterlogged. That is why the window below spans the cold months rather than sitting in the middle of the growing season.

Santiago de Querétaro sits in zone 10a, which is milder than this crop wants, and a winter that never really arrives is its own problem. The dates below still describe the right time of year; the open question is survival rather than timing.

Do not expect a crop in the first year. A plant set out now should give its first worthwhile pick around year 2, and will then produce every year after that, which is what makes the planting decision worth getting right the first time.

See every crop timed for Santiago de Querétaro →

Growing bleeding hearts in Santiago de Querétaro

When should I plant bleeding hearts in Santiago de Querétaro?

Aim for 5 Dec - 14 Jan in an average year. If you would rather not gamble on the weather, wait until 4 Nov - 4 Feb - by then frost has finished in nine years out of ten.

When will bleeding hearts be ready to harvest in Santiago de Querétaro?

Expect to start picking around 1 Apr - 30 Jun, based on 110 to 140 days to maturity from the planting date calculated for this location.

How much frost will bleeding hearts tolerate?

Hardy to -35C. Emerging shoots are brittle and damaged by hard late frosts, though the plant recovers. Requires a cold winter and does not grow well above zone 8.