Vigorous Late-Season Flowering Vine for Minnesota Gardens

Sweet Autumn Clematis 1 (Clematis 'Sweet Autumn') is a clematis hand-selected for the Twin Cities climate. Sweet Autumn Clematis: clouds of fragrant white flowers in September and October. Whether you're planting a shaded border in Wayzata, layering a foundation bed in Minneapolis, or anchoring a perennial bed in Woodbury — Sweet Autumn Clematis 1 performs reliably in zone 4b–5a yards.

Sweet Autumn Clematis 1 Plant Details

Sweet Autumn Clematis 1 Uses in Minnesota Landscapes

Trellises and arbors

A vigorous vine to cover an arbor, trellis, or fence quickly. Plant at the base of the structure and let it climb.

Late-season pollinator support

September fragrance attracts late-season pollinators across Twin Cities yards.

Best Time to Plant Sweet Autumn Clematis 1 in Minnesota

Fall (late August–early October) is the ideal planting window. Soil is still warm for root development, cool air reduces transplant stress, and the plant gets 6–8 weeks to establish roots before ground freeze (typically mid-November in the Twin Cities).

Spring (late April–May) is the second-best window — the plant gets the full growing season to establish before its first winter.

Avoid summer planting (June–August) when possible. Never plant after mid-October or before late April — frozen ground or frost-heaving kills new roots.

How to Plant Sweet Autumn Clematis 1

1. Dig wide, not deep. 2–3× the root ball width, same depth as the container. Heavy clay benefits from even wider digging.
2. Check drainage. Fill the hole with water — if it doesn't drain in 30 minutes, mound-plant or break through any clay hardpan to improve drainage.
3. Backfill with native soil + 20–30% compost. Minnesota clay-loam benefits from organic amendment but don't create a "container" of pure compost.
4. Spacing. Refer to the mature width above and space accordingly. Closer for mass plantings, wider for individual specimen plants.
5. Water basin. Build a 3–4 inch ring around the planting to direct water to the roots. Flatten or remove before winter to avoid ice damage.
6. Mulch. 2–3 inches of shredded bark or wood chip mulch, kept 2 inches away from the trunk or crown. Do NOT use gravel mulch in Minnesota — it doesn't insulate.

Watering Sweet Autumn Clematis 1 in Minnesota

First Year Watering Schedule

• Weeks 1–2: Every 1–2 days, deep and slow (15–25 minutes per plant)
• Month 1–2: Every 3–4 days
• Month 3–6: Every 5–7 days during active growth; less if rainfall is adequate (Minnesota averages ~3 inches/month June–August)
• Stop watering 2–3 weeks before ground freeze (typically late October in the Twin Cities metro) to avoid pushing late-season growth that gets killed by winter

After Year One

Established plants only need supplemental water during droughts (2+ weeks with no rain and temps above 80°F). Water deeply and infrequently — every 7–14 days during dry spells, soaking to 6–8 inches depth. Let natural rainfall do most of the work.

Will Sweet Autumn Clematis survive a Minnesota winter?

Yes — hardy to zone 4.

How do I prune Sweet Autumn Clematis?

Cut back hard (to 12 inches) in early spring — it blooms on new wood, so hard pruning produces the best fall display.

You May Also Like

• Shop the full Three Timbers Minnesota catalog — zone 4-hardy plants hand-selected for Twin Cities yards
• Deer-Resistant Plants — for high-pressure suburbs like Minnetonka, Wayzata, and Eden Prairie
• Pollinator Garden Plants — supports the Lawns to Legumes program