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Garlic Purple

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Garlic Purple (Allium sativum) is an attractive hardneck variety featuring round bulbs with pink to light purple skins and crisp white flesh. One of the earliest garlics to mature, it’s ideal for gardeners seeking a quick-growing variety ready for harvest in summer. Each bulb holds large, easy-to-peel cloves with a mildly hot flavour when raw that mellows and sweetens when cooked, making it perfect for enhancing soups, sauces, and roasts, as well as garnishes, salads, casseroles, dips, and bread. Rich in antioxidants and allicin, Garlic Purple is also recognised for its potential health benefits, including immune support, anti-inflammatory properties, and cardiovascular health support. Best planted during the cooler months, Garlic Purple thrives in full sun and well-drained soil, particularly in regions with cold winters. It also makes a great companion for potatoes, strawberries, and roses, helping to deter common pests naturally, while its striking colour, reliable performance, and rich flavour make it a standout in both the garden and kitchen.

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Description

Garlic Purple
Garlic Purple (Allium sativum) belongs to the Alliaceae family and is a hardneck variety valued for its aromatic bulbs with vibrant pink to light purple skins and crisp white flesh. It develops a central woody stem and may produce a flower stalk, called a scape, depending on the climate and growing conditions. Maturing earlier than most, Garlic Purple is typically ready by early summer. It has a mildly hot flavour when raw that mellows and sweetens when cooked. This variety is ideal for roasting, sautéing, blending into dips and seasoning casseroles, soups and sauces. It stores for three to six months when kept properly and is prized for its robust flavour and easy-to-peel cloves.

Climate Suitability
Garlic Purple is best suited to cool to arid climates where a consistent winter chill supports strong growth and uniform bulb development. It performs particularly well in the southern parts of Australia. In warmer or subtropical regions with milder winters, bulb formation can be less consistent unless managed carefully. For best results, chill cloves in the refrigerator for 6 to 10 weeks before planting and grow them in a well-drained, sheltered microclimate. While this can improve results, softneck varieties will offer greater reliability in regions with mild or inconsistent winters due to their lower chill requirements.

When to Plant
Plant the garlic as soil temperatures begin to fall. In warmer climates, plant in early autumn to promote strong root growth before winter. In cooler regions, aim to plant by the end of June while the soil is still workable. Garlic benefits from frosty conditions but must establish roots beforehand. Avoid planting into frozen or waterlogged soil. If ground conditions are poor, start cloves in pots and transplant once the soil improves.

Soil Preparation
Choose a sunny position with well-drained, friable soil. Garlic prefers a pH between 6.5 and 7.5. Improve the soil by incorporating compost or aged manure before planting. Avoid using high-nitrogen fertilisers, which encourage leafy growth rather than bulb formation. In heavy soils, plant into raised beds or mounds to ensure good drainage.

How to Plant
Select firm, healthy cloves from a well-cured bulb. Garlic Purple forms a single layer of large cloves around a central stem, making selection easy. Gently separate the cloves just before planting, keeping the papery skins intact. Soaking cloves helps reduce transplant shock and supports early root growth. Plant cloves with the pointed end facing up, about 5 centimetres deep or slightly deeper in warmer climates to help maintain even soil temperature and moisture. Space cloves 10 centimetres apart with 15 centimetres between rows. In humid climates, increase spacing slightly to improve airflow. Apply loose organic mulch after planting. Raised beds or containers are recommended for poorly drained soils.

Growing in Pots
Garlic grows well in containers. Use a large, deep pot with good drainage and quality potting mix enriched with compost. Space cloves 10 centimetres apart and position the container in full sun. Water consistently, as pots dry out faster than garden beds. With the right care, garlic is ready for harvest between late spring and summer.

Fertilising
Before planting, incorporate compost or aged manure and apply a balanced fertiliser such as Blood and Bone or Dynamic Lifter. Once shoots emerge, reapply lightly but stop when lower leaves begin to yellow. In pots, use slow-release or liquid fertiliser during the growing season and always water after feeding.

Watering
Water lightly after planting. Once shoots appear, water consistently while avoiding overwatering. In pots, check soil moisture more frequently. Reduce watering once lower leaves begin to yellow and stop altogether a few weeks before harvest to help bulbs mature and cure in the ground.

Mulching
Mulch helps conserve moisture, suppress weeds and regulate soil temperature. Use a loose organic mulch such as straw or sugarcane and keep it clear of emerging shoots. In cooler or dry climates, a thicker mulch layer can help retain moisture and insulate the soil. In warm or humid climates, use a lighter layer to maintain airflow and reduce humidity. Monitor mulch closely in areas with heavy rainfall to avoid fungal issues.

Harvesting and Storage
Garlic Purple matures in six to eight months. Harvest when the lower leaves are yellow and four to six green leaves remain. In wet climates, harvest promptly at this stage to reduce the risk of rot.
Lift bulbs gently with a fork, taking care not to bruise them. Do not wash. Brush off the soil and cure in a dry, shaded, well-ventilated area for 2 to 4 weeks, or up to 10 weeks in humid conditions. Once cured, trim roots and stems and store in a cool, dark location with good airflow. Garlic Purple typically stores well for three to six months under ideal conditions.

Scapes and Bulbils
Garlic Purple is a weakly bolting variety and may or may not produce a scape. If scapes appear, they usually emerge in late spring or early summer. Remove them once they begin to curl to help direct energy into bulb formation. Scapes are edible and can be grilled, stir-fried or made into pesto. Occasionally, bulbils may form at the scape’s tip. These can be used fresh or replanted to produce bulbs over two growing seasons.

Pests and Diseases
Garlic is low-maintenance but can be affected by fungal diseases like white rot, rust, and downy mildew, especially in humid or wet conditions. Pests such as thrips, aphids, and mites may also appear. Ensure good drainage, adequate spacing, and rotate crops annually. Remove affected plants promptly. Treat fungi with sulphur or copper sprays and pests with neem oil or insecticidal soap.

Safety
Garlic is non-toxic to humans but can be harmful to dogs and cats if consumed in large quantities. Keep bulbs and cloves securely stored, and do not feed them to pets. Consult a veterinarian if accidental ingestion is suspected.

Supplied as a dormant bulb.

Additional information

Price Code

C – Orange Pack

Botanical Name

Allium sativum

Quantity in Pack

2 Bulbs

Harvest Time

Harvest in the summer, once the bulbs have reached full maturity. Hardneck garlic typically takes around 6 to 8 months to develop, depending on climate, planting time, and growing conditions. In warmer regions where planting usually occurs in early autumn, harvest can take place as early as spring or early summer. In cooler regions where planting typically takes place by early winter, garlic is usually ready in late spring to summer.

While many hardneck varieties mature within 6 to 8 months, some may take up to 9 months, especially if growing conditions are cooler or development has been slow. This extended growing period allows bulbs to fully form and cure naturally in the ground.

Rather than relying solely on the number of months since planting, monitor your garlic plants closely as the season progresses. Environmental factors, planting time, and soil conditions can all influence the exact harvest window.

Planting Time

Garlic Purple is best planted during the cooler months to take advantage of winter chill, which encourages healthy growth and uniform bulb development. For best results, aim to plant in early autumn for warmer climates and by the end of June for cooler climates, allowing cloves time to establish strong root systems before winter.

• Cool and temperate climates: February to June
• Arid climates: February to June
• Subtropical climates: March to July — pre-chilling cloves in the refrigerator for 6 to 10 weeks before planting can help mimic winter conditions and support better bulb development.

While February to April is considered the ideal planting time across most climates, garlic can still be planted outside this period. If your bulbs arrive later in the season or if the ground isn’t cool enough, you can confidently plant them within your region’s recommended timeframe. The autumn equinox, around 20–21 March, is often seen as the start of ideal planting weather in many regions. In cooler areas, planting is generally completed by the winter solstice, around 21–22 June, giving the garlic enough time to establish before rapid growth begins in spring.

Avoid planting into waterlogged or frozen soil. If necessary, start cloves in deep pots using a quality potting mix with good drainage. Once the weather improves and the soil becomes workable, transplant the established garlic into garden beds to continue growing through the season.

These ranges are a guide to help align planting with ideal soil conditions while avoiding extremes in temperature or humidity. Seasonal patterns vary each year, so consider local weather trends and soil readiness when planning your planting schedule.

Planting Depth

Plant garlic cloves with the pointed tip facing up and the flat base down. The standard planting depth is approximately 5 cm below the soil surface, measured from the tip of the clove to the top of the soil. This depth supports strong root development and healthy shoot emergence in most growing conditions.

In warmer climates, cloves can be planted slightly deeper, around 7 to 10 cm, to help retain soil moisture and buffer against temperature fluctuations. This added depth can support more stable early growth and bulb development.

If your soil is heavy, poorly drained or prone to waterlogging, consider planting slightly shallower at 3 to 4 cm to minimise the risk of rot. Avoid planting too shallowly, as cloves may become exposed over time, and avoid excessive depth in dense soils, which may hinder emergence.
Use raised beds or well-prepared soil with good drainage for best results and apply a loose organic mulch after planting to conserve moisture and suppress weeds.

Planting Width

Space cloves at least 10 cm apart, with 15 cm between rows, to ensure they have enough room to grow and allow for good airflow. Cloves can be spaced further apart, up to 15 to 20 cm, if desired. This wider spacing may be beneficial in areas prone to pests and diseases, as it improves ventilation and reduces competition between plants.

Soil

Garlic prefers fertile, friable, well-drained soil with a pH between 6.5 and 7.5. Enrich the soil with either compost or well-aged manure, and apply a balanced organic fertiliser such as Blood and Bone or Dynamic Lifter to support strong, even bulb development.

Preparing the beds a few weeks in advance allows the soil amendments to break down properly and gives the pH time to stabilise before planting. Compost and manure can temporarily lower soil pH, so test the soil after incorporating organic matter. If the pH is too low, raise it by applying garden lime or dolomite according to the product instructions.

Avoid planting garlic in heavy clay or poorly drained soils, as this can result in rot and misshapen bulbs. Improve drainage by working in organic matter, planting in raised beds, or forming mounded rows within trenches, positioning the cloves on top of the mound and covering them lightly with soil. Garlic does not tolerate waterlogged conditions, so ensuring good drainage is essential for a healthy crop.

How to Plant

Choose a sunny, open position with well-drained, friable soil. Avoid areas prone to waterlogging or heavy clay, which can lead to rot or misshapen bulbs. Garlic prefers a sheltered spot, so provide some protection from strong winds where necessary.

When planting your garlic, check that the cloves are firm and healthy. Break bulbs into individual cloves only when you are ready to soak and plant, keeping the skins intact to protect them.

Soaking cloves before planting is optional but can be beneficial. It helps hydrate the cloves, provides gentle nutrients, encourages early root development, and improves their chance of successful establishment while reducing transplant shock. Cloves can be soaked for a few hours or overnight in a weak solution of seaweed extract or fish emulsion. Once soaked, plant them promptly, as soaked cloves will deteriorate if left out for too long.
Very small interior cloves can be planted if desired, but they typically produce smaller bulbs. Otherwise, set them aside for kitchen use. Once separated from the bulb, these cloves are best used within a few weeks, as they do not store as long.

Plant cloves with the pointed end facing up at around 5 cm depth. In wetter regions, plant slightly shallower, at about 3–4 cm, to minimise moisture-related issues, ensuring the tops of the cloves sit just below the soil surface. In warmer regions, plant slightly deeper, at about 7–10 cm, to help insulate the cloves and encourage stronger root development before the onset of cooler weather.

Space cloves at least 10 cm apart in rows about 15 cm apart to promote airflow and reduce the risk of fungal diseases. The more space between plants, the harder it is for pests and diseases to spread, as good separation reduces humidity and limits physical contact between infected foliage.

Apply mulch after planting to help conserve moisture, suppress weeds and regulate soil temperature. In cooler regions, a thicker layer (5–7 cm) of straw, sugarcane mulch or other loose organic material helps insulate the soil and protect developing roots. In hot, dry climates, a similarly thick mulch can help prevent the soil from drying out and overheating. In warm, humid climates, apply a lighter mulch (around 2–3 cm) to avoid excess moisture around the cloves, which can encourage rot or fungal issues.

For heavy or poorly drained soils, consider planting garlic in raised beds or on top of mounds to improve drainage and reduce the risk of rot. Large containers are also a suitable option, offering better control over soil conditions.

Watering

After planting, water the garlic in lightly to help settle the soil and initiate root development. Garlic does not require heavy watering at this stage, as the cloves are dormant and excess moisture can hinder sprouting. Too much water early on can increase the risk of rot, especially in poorly drained soils.

Natural rainfall is often sufficient to sustain garlic during its early stages. However, if rainfall is low or inconsistent, apply light water sparingly to prevent the soil from drying out completely until green shoots emerge.

When growing in pots, keep in mind that container soil tends to dry out faster than garden beds, particularly in warm or windy conditions. Monitor moisture levels regularly and water as needed to avoid the soil becoming overly dry before shoots appear.

As the garlic continues to grow, maintain consistent soil moisture to support foliage and bulb development. Water deeply when the top few centimetres of soil feel dry, allowing the soil to drain well between waterings. Avoid overwatering, as saturated conditions can lead to rot or misshapen bulbs. Garlic should not be planted in heavy clay soils, which retain too much water and prevent proper bulb formation. If necessary, improve the site by using raised beds filled with free-draining, friable soil, or plant in mounds.

The tops may also begin to brown at this stage. Cease watering entirely a few weeks before harvest to allow the bulbs to dry and firm up in the soil before lifting. In some cases, garlic may be ready to harvest just one to two weeks after watering stops. Use the presence of 4 to 6 green leaves as your cue. If the timing varies slightly, rest assured the bulbs will continue to mature safely in the soil.

Fertilise

Garlic requires moderate feeding to develop strong foliage and healthy bulbs. Before planting, apply a balanced organic fertiliser such as Blood and Bone or Dynamic Lifter, and gently mix it through the topsoil. These fertilisers provide a good balance of nutrients to support root and leaf development.

Once growth appears and leaves begin to form, supplement with a low-nitrogen, higher-potassium fertiliser every 3–4 weeks. Products like PowerFeed PRO SERIES Flowers, Fruit & Citrus or Seasol plus Nutrients – Fruit & Citrus support strong bulb formation and steady plant health. Always follow the manufacturer's instructions for application rates.

Feeding should be timed to support early and mid-season growth. Apply fertiliser during active growth but avoid further fertilising once the lower leaves begin to yellow and dry out, as this signals that the plant is nearing maturity and no longer requires added nutrients.

Well-aged manure and compost are beneficial for improving soil structure and fertility. However, because these amendments may slightly lower pH, it’s advisable to check the soil pH after application. Garlic prefers a pH of 6.5 to 7.5. If needed, you can raise the pH by adding dolomite lime or garden lime to reduce acidity and create a more favourable environment for bulb development.

For garlic grown in pots, nutrients leach more quickly than in garden beds. Before planting, incorporate a balanced organic pelletised fertiliser, such as Blood and Bone or Dynamic Lifter, into the potting mix to provide a steady supply of nutrients. Use a high-quality, free-draining potting mix enriched with well-aged manure and compost to support root development and retain just enough moisture. As the garlic begins to grow, supplement with a diluted liquid fertiliser every 3–4 weeks to support healthy development and bulb formation. Liquid options like fish emulsion, seaweed extract, or formulations high in potassium (such as PowerFeed PRO SERIES Flowers, Fruit & Citrus) are ideal. Always water well after feeding to help nutrients reach the roots.

Mulching plays an important role in maintaining soil health throughout the garlic growing season. Organic mulches such as straw, sugarcane mulch, or shredded leaves help conserve moisture, moderate soil temperatures, and suppress weed growth. In warmer regions, mulch also protects bulbs from excessive heat, while in cooler areas, it insulates the soil during early growth.

Avoid compacting mulch directly over emerging shoots. Keep the layer loose and airy to ensure good airflow and prevent excessive humidity, especially in areas with high rainfall. As the garlic matures, the mulch can be gently pulled back to help reduce moisture and allow the bulbs to dry slightly before harvest.

Harvest

Garlic Purple matures in six to eight months. Harvest when the lower leaves are yellow and four to six green leaves remain, noting that the remaining leaves may have yellow or brown tips. Each green leaf corresponds to a protective wrapper around the bulb. In wet climates, monitor plants closely and harvest as soon as this stage is reached to reduce the risk of rot. In all climates, stem softening may also indicate readiness but always prioritise leaf colour and bulb firmness to avoid splitting and ensure quality. If unsure, gently lift one bulb using a fork or trowel and check the size and skin development. If the bulb is small or not fully formed, allow the rest of the crop to continue maturing for another one to two weeks, ideally before the leaves completely die back.
Harvest on a dry day to reduce the risk of introducing excess moisture to the bulbs, which can compromise curing and storage. Gently lift bulbs using a fork, taking care not to bruise them. Do not wash. Brush off excess soil and leave leaves intact, as they help regulate drying and protect the bulb during curing.
Cure garlic in a dry, shaded, well-ventilated area for two to four weeks, or up to ten weeks in humid conditions. Garlic can be laid flat in a single layer or hung in bunches by their leaves to dry. Suitable curing locations include an open shed, covered veranda, carport, or any sheltered outdoor space with good airflow and protection from direct sun and rain. Semi-enclosed spaces such as an airy garage or breezeway can also be used, provided they are well-ventilated and not fully sealed like typical indoor rooms.
You’ll know curing is complete when the outer skins are papery, the roots are dry, and the neck feels firm and dry to the touch. Once cured, trim roots and stems. Garlic can then be hung or transferred to mesh bags, baskets, or trays for storage. Store in a cool, dark, and well-ventilated space such as a pantry, cellar, cupboard, or shaded garage. Avoid sealed containers or brightly lit areas, as these can encourage mould or early sprouting.
Garlic Purple cannot be braided due to its stiff stems, but bunches can still be tied together for hanging. It typically stores well for three to six months under ideal conditions.

Garlic Purple can be grown from your own saved bulbs. Select the largest, healthiest bulbs at harvest and store them in a cool, dry, and well-ventilated space. When it’s time to plant again, break the bulbs into individual cloves and use the biggest ones.
In cool and temperate climates, these bulbs typically store well for 3 to 6 months. In warmer or humid regions, storage may be less reliable, so purchasing new stock each year may offer more dependable results.

Please note: Garlic Purple is a hardneck variety that is considered weakly bolting, meaning it may or may not produce a flower stalk (scape) depending on growing conditions. Scapes are more likely to appear in cooler climates, often as a response to environmental stress, and are uncommon in warmer regions. If a scape does develop, allow it to curl once before removing it by cutting just above the top leaves. This helps redirect the plant’s energy into bulb formation. Scapes are edible and prized for their mild garlic flavour. Try them in stir-fries, sautés or pesto.

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