Why Did my Garlic Plant Die?

For many gardeners, tending to an allotment is a labour of love. Whether you’re a seasoned green thumb or just starting out, seeing a plant wither and die can be both disappointing and puzzling.

One plant that can sometimes cause confusion is garlic. Despite being relatively easy to grow, there are several factors that can contribute to a garlic plant’s demise.

Understanding these factors can help prevent future losses. Here’s a comprehensive guide to the most common reasons why garlic plants might die in a UK allotment or garden:

  1. Planting Time:
    • Too Early or Too Late: In the UK, autumn is the best time to plant most garlic varieties, typically in October. This allows the bulbs to develop roots before the cold winter months. Planting too early exposes the bulbs to disease and pests, while planting too late can result in poor root development.
  2. Poor Soil Conditions:
    • Drainage Issues: Garlic hates waterlogged soil. If the ground doesn’t drain well, the bulbs can rot. This can be a problem if you are growing garlic in pots.
    • Soil pH: Garlic prefers a pH level between 6.0 and 7.5. A pH outside this range can hinder growth.
    • Lack of Nutrients: Garlic requires a well-fertilized soil. Enriching your soil with compost or a balanced fertilizer before planting is advisable, this till help your garlic grow well.
  3. Disease and Pests:
  4. Incorrect Watering:
    • Overwatering can cause bulbs to rot, especially in heavy soil.
    • Underwatering in dry periods can stunt growth.
  5. Planting Depth and Spacing:
    • Garlic cloves should be planted about 2-4 inches deep. Too shallow, and they risk being exposed; too deep, and they may not sprout.
    • Adequate spacing (about 6 inches apart) ensures that bulbs have room to grow and reduces the risk of disease spread.
  6. Weather Extremes:
    • Unexpected frost can damage young garlic shoots. While mature plants can handle UK winters, it’s young sprouts that are at risk.
    • Unusually warm winters can trick garlic into thinking it’s spring, causing premature sprouting, which can be detrimental when the cold returns.
  7. Planting Store-Bought Garlic:
    • Garlic from supermarkets might not be suited for UK climates. It could also be treated to prevent sprouting. For best results, source your bulbs from a local nursery or a trusted seed supplier.


Understanding why your garlic plant died is the first step in ensuring that future crops thrive. Remember, gardening is as much about learning from mistakes as it is about celebrating successes. With the right knowledge and care, your next garlic crop can flourish in your UK allotment.