Irish Greenhouse Harvests: Crops to Grow in Autumn

Irish Greenhouse Picks for Autumn

Introduction

Autumn gives greenhouse growers a valuable chance to continue cropping. Once the air turns cooler, cover can prolong the productive period and provide fresh food during colder months. Because Atlantic weather differs across Ireland and from one site to another, consider airflow, drainage and shelter. The sections below suggest worthwhile crops, with guidance for sowing, tending and gathering a plentiful autumn yield.

Why garden in autumn?

Under cover, conditions are easier to manage as temperatures fall, helping shield plants when the first frost arrives and lengthening the season. Gardeners may continue picking vegetables, herbs and fruit during autumn, and carefully chosen crops may carry on into winter. The protected space also invites trials with unfamiliar varieties, alternative sowing schedules and new cultivation techniques.

What to plant under cover this autumn

1. Leafy greens:
   • Spinach: Fast-growing and frost-tolerant, spinach is well suited to cooler weather. Sow seed straight into the soil and keep the bed evenly watered.
   • Lettuce: Cos, butterhead and loose-leaf lettuces suit easing temperatures. Small, repeated sowings keep leaves available over a longer period.
   • Kale: Kale is nutritious, resilient in chilly weather and useful in a wide range of seasonal dishes.
2. Root vegetables:
   • Carrots: Well suited to autumn planting, carrots prefer loose, free-draining soil. Thin seedlings so developing roots have enough room to grow.
   • Radishes: Fast-growing radishes are ideal for succession sowing. They work well in compact beds, pots and containers.
   • Beetroot: Beetroot offers two harvests: the swollen roots and the young leaves are both useful in the kitchen.
3. Brassicas:
   • Broccoli: Cooler air suits broccoli, which performs reliably in a greenhouse. Leave generous gaps so each plant can reach full size.
   • Cauliflower: This crop needs a little more attention but rewards care with delicious heads. Watch humidity levels to reduce mould risk.
   • Cabbage: Use free-draining ground and guard against pests. Cabbages selected for autumn often have notably tender, sweet leaves.
4. Herbs:
   • Parsley: Parsley is tough, adaptable and available for picking through autumn. Maintain moisture around the roots and provide abundant light.
   • Coriander: Cooler conditions suit coriander and its bright taste complements autumn cooking. Frequent leaf picking helps the plant keep producing.
   • Chives: Straightforward to cultivate, chives lend food a gentle onion note. Cut leaves regularly as the plant replenishes them.
5. Other crops:
   • Swedes: Their roots and greens may both be eaten, giving swedes more than one use. Choose rich soil that drains freely.
   • Swiss chard: Swiss chard brings colour and nutrients, tolerates frost and yields several cuttings.
   • Peas: Sugar snap peas and garden peas appreciate lower temperatures. Give climbing types a frame, netting or other firm support.

Making autumn greenhouse crops thrive

1. Temperature control: Monitor the greenhouse and balance heat with ventilation to suit the crops. Effective insulation keeps more warmth inside during colder nights.
2. Light management: When shorter days leave insufficient natural light, add grow lamps. Arrange them carefully so illumination reaches every crop evenly.
3. Watering: Cooler conditions usually reduce demand for water, although the growing medium should remain consistently moist. Do not soak it, as excessive water encourages root rot.
4. Soil preparation: Work compost and other organic material through the soil to raise nutrient content. Keep drainage channels clear and prevent waterlogging.
5. Pest and disease management: Check plants often for pest and disease signs. Use biological treatments only when authorised in Ireland for amateur use and follow the label; good airflow helps minimise trouble.

Conclusion

There is much to gain from autumn cultivation: the productive season lasts longer and the greenhouse can still supply fresh food as colder weather arrives. Match crops to the conditions, then combine attentive watering, ventilation, light and soil care for a plentiful, enjoyable harvest. Browse the quality greenhouse range at Bloomcabin and choose a structure suited to your garden plans.

A Bloomcabin greenhouse can make gardening more rewarding and encourage a sustainable way of living by supporting your efforts to grow some of your own food throughout the year.