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Raised garden bed I – solid 2⅜ in European larchRaised garden bed IRaised garden bedsRaised garden bed L – solid 2⅜ in European larchRaised garden bed LRaised garden bedsRaised garden bed U – solid 2⅜ in European larchRaised garden bed URaised garden bedsBed I with bench – solid 2⅜ in European larchBed I with benchRaised garden bedsBed L with bench – solid 2⅜ in European larchBed L with benchRaised garden bedsSolid bench – solid 2⅜ in European larchSolid benchSeatingPedestal bench – solid 2⅜ in European larchPedestal benchSeatingBench with planter – solid 2⅜ in European larchBench with planterSeatingGarden table – solid 2⅜ in European larchGarden tableSeatingTable and two benches – solid 2⅜ in European larchTable and two benchesSeatingSandbox with seating – solid 2⅜ in European larchSandbox with seatingFor kidsGarden steps – solid 2⅜ in European larchGarden stepsSlope & terrace

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Choose your climateBased on winter hardiness only.

Vegetable · Convolvulaceae family

Sweet potato

Ipomoea batatas

Full sun to part shade 11¾ in–9 ft 10⅛ in × 2 ft 11⅜ in–9 ft 10⅛ in Harvest September Moderate care

In short a 10-second read

SunFull sun to part shade
Size11¾ in–9 ft 10⅛ in
spacing 11¾ in
PlantingMay–June
HarvestSeptember
Care levelModerate care

Where to plant and how much to water

Sun, soil and water.

It grows best in full sun to part shade, in average to moist soil.

Sun

Sun6 hours or more
Part shade3–6 hours
Shadeunder 3 h

Soil

tolerates any pH
acidicneutralalkaline
average to moistloamyhumus-rich

Watering

keep the soil evenly moistonly in dry spellsless when it rains

How much space it takes

Mature size.

The mature plant next to a person (69 in).

3 ft 3⅜ in6 ft 6¾ in9 ft 10⅛ in11¾ in–9 ft 10⅛ inspread 2 ft 11⅜ in–9 ft 10⅛ in
11¾ in–9 ft 10⅛ in× spread 2 ft 11⅜ in–9 ft 10⅛ in

Plant 11¾ in apart.

How to plant: in rows, 11¾ in apart

The final size depends on the cultivar and the spot — we give the range from smallest to largest.

Calendar

Through the year.

Typical for a temperate climate (four seasons). The line shows the current month.

The year at a glance

Planting: JanuaryPlanting: FebruaryPlanting: MarchPlanting: AprilPlanting: MayPlanting: JunePlanting: JulyPlanting: AugustPlanting: SeptemberPlanting: OctoberPlanting: NovemberPlanting: DecemberFeeding: JanuaryFeeding: FebruaryFeeding: MarchFeeding: AprilFeeding: MayFeeding: JuneFeeding: JulyFeeding: AugustFeeding: SeptemberFeeding: OctoberFeeding: NovemberFeeding: DecemberHarvest: JanuaryHarvest: FebruaryHarvest: MarchHarvest: AprilHarvest: MayHarvest: JuneHarvest: JulyHarvest: AugustHarvest: SeptemberHarvest: OctoberHarvest: NovemberHarvest: DecemberJanFebMarAprMayJunJulAugSepOctNovDec
PlantingFeedingHarvest
Now, in October: nothing to do — the next job is in May.
JanFebMarAprMayJunJulAugSepOctNovDec

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

transplant outdoors: May–June

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

June–August

Harvest

JanFebMarAprMayJunJulAugSepOctNovDec

September

Feeding

Nutrition.

Light
high-potash fertilizer
JanFebMarAprMayJunJulAugSepOctNovDec

Pests and diseases

Common problems and what to do.

The most common problems in Central Europe. Protection is listed from the gentlest option.

What you will see

Speckled leaves and early leaf drop.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
May–September

How to protect

  1. Prevention
    • Plants in a hot, dry, overcrowded greenhouse suffer more: increase humidity and airflow.
    • In fall, remove heavily infested plants and clear away debris, canes and ties; disinfect the greenhouse thoroughly.
    • Weed around the greenhouse; weeds are hosts.
  2. Biological March to OctoberPredatory mites (from a biological control supplier) are the most common biological control against spider mites.
  3. Chemical — only when nothing else helps according to the product labelLast resort only: a product authorized in your country against mites. Try non-chemical methods first.
Two-spotted spider mitepest · May–September

What you will see

Speckled leaves and early leaf drop.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
May–September

How to protect

  1. Prevention
    • Plants in a hot, dry, overcrowded greenhouse suffer more: increase humidity and airflow.
    • In fall, remove heavily infested plants and clear away debris, canes and ties; disinfect the greenhouse thoroughly.
    • Weed around the greenhouse; weeds are hosts.
  2. Biological March to OctoberPredatory mites (from a biological control supplier) are the most common biological control against spider mites.
  3. Chemical — only when nothing else helps according to the product labelLast resort only: a product authorized in your country against mites. Try non-chemical methods first.
More about this problem

Glasshouse whitefly

Trialeurodes vaporariorum
pest
More about this problem

What you will see

Sticky honeydew on leaves, black sooty mold and tiny white winged insects.

How to protect

  1. Prevention
    • Inspect new plants and, if possible, quarantine them.
    • Get rid of unneeded plants from the greenhouse so the whitefly has fewer hosts.
  2. By hand throughout the growing seasonYellow sticky traps are for monitoring, not a major control measure.
  3. Biological early, before a heavy infestationParasitic wasps (from a biological control supplier) attack whitefly larvae; release them early, before plants are heavily infested. Parasitised larvae turn black.
Glasshouse whiteflypest

What you will see

Sticky honeydew on leaves, black sooty mold and tiny white winged insects.

How to protect

  1. Prevention
    • Inspect new plants and, if possible, quarantine them.
    • Get rid of unneeded plants from the greenhouse so the whitefly has fewer hosts.
  2. By hand throughout the growing seasonYellow sticky traps are for monitoring, not a major control measure.
  3. Biological early, before a heavy infestationParasitic wasps (from a biological control supplier) attack whitefly larvae; release them early, before plants are heavily infested. Parasitised larvae turn black.
More about this problem

What you will see

Small round holes in leaves, mainly on seedlings; tiny beetles jump away when you touch the plant.

When to look

Spring and summer

How to protect

  1. Prevention
    • Rotate crops so that flea beetles do not build up in one spot.
  2. By hand from plantingCover young plants with fine mesh.
Flea beetles (Phyllotreta, Psylliodes)pest · spring and summer

What you will see

Small round holes in leaves, mainly on seedlings; tiny beetles jump away when you touch the plant.

When to look

Spring and summer

How to protect

  1. Prevention
    • Rotate crops so that flea beetles do not build up in one spot.
  2. By hand from plantingCover young plants with fine mesh.
More about this problem

What you will see

Silvery speckling of the leaves.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
May–September

How to protect

  1. Prevention
    • Rotate crops; thrips build up when the crop is grown repeatedly in the same place.
  2. BiologicalPredatory bugs and mites (mainly in a greenhouse).
Thripspest · May–September

What you will see

Silvery speckling of the leaves.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
May–September

How to protect

  1. Prevention
    • Rotate crops; thrips build up when the crop is grown repeatedly in the same place.
  2. BiologicalPredatory bugs and mites (mainly in a greenhouse).
More about this problem
Sources (6)

Frequently asked

Quick answers.

When is sweet potato harvested?

In September.

Does sweet potato tolerate shade?

It tolerates part shade (3–6 hours of sun), but not full shade.

How much space does sweet potato need?

At maturity 2 ft 11⅜ in–9 ft 10⅛ in wide and 11¾ in–9 ft 10⅛ in tall; recommended spacing 11¾ in.

Two-spotted spider mite — what can you do?

Plants in a hot, dry, overcrowded greenhouse suffer more: increase humidity and airflow. Predatory mites (from a biological control supplier) are the most common biological control against spider mites.

Glasshouse whitefly — what can you do?

Inspect new plants and, if possible, quarantine them. Yellow sticky traps are for monitoring, not a major control measure.

Sources (7) Checked 27 October 2026

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