Description
Soil Preparation
Gladioli can be grown in most soils but prefers well-draining light soil that is also slightly acidic to neutral (pH 6.0 to 7.0) and benefits from added compost or organic matter. This helps lighten heavy soils, ensuring roots can grow freely. Before planting, dig in a little blood and bone, well-broken-down cow manure, or a complete fertiliser.
Planting and Care Tips
Plant the bulbs in full sun, spacing them 8-15 cm apart and 10-15 cm deep, with the flat side facing down. Add stakes for support if needed, and water thoroughly after planting.
To ensure optimal blooming of gladioli, fertilise them at specific stages of their growth. Begin by applying a complete fertiliser (such as a 10-10-10 or 5-10-10) to the soil when planting the bulbs. Once the shoots emerge, apply a balanced fertiliser as a top dressing. Continue to fertilise with a balanced fertiliser every 2-3 weeks throughout the growing season. After flowering, give a final feed to help strengthen the bulbs for the next season. Always follow the specific instructions on the fertiliser package for the correct amounts to use.
In summer, keep the soil consistently moist by thoroughly watering once a week with at least 2.5 cm of water, but avoid waterlogging to prevent root rot.
If planting in pots, use a high-quality potting mix and keep them well-watered throughout the summer. The flowers will begin to open from the bottom of the stem upward. Additionally, monitor for pests such as aphids and thrips.
Dividing and Storing Gladioli Bulbs
Gladioli can be left undisturbed in the ground for many years, but it is beneficial for their growth to be divided every few years. Dividing prevents overcrowding, improves bloom quality, and reduces disease and pest issues, while also allowing for propagation. The best time to divide is after the foliage has died back but before the first frost (late summer to autumn), although specific timing can vary due to local climate. Carefully dig up the corms, brush off the soil, and separate the main corm from the cormlets. Discard any old, shrivelled, or diseased corms. If not replanting immediately, dry the bulbs and store them in a cool, dark, dry, and airy place, dusting them with insecticide to prevent thrips. Check stored bulbs occasionally during winter, maintaining storage conditions between 2-7°C with good air circulation. Following these steps ensures gladioli thrive and produce beautiful blooms throughout the growing season. Adjusting the timing based on your local climate will help ensure the best results for your gladioli. If replanting, place the corms 8-15 cm apart and 10-15 cm deep in prepared soil, and label different varieties if necessary.
If wet conditions are a concern over winter, gladioli bulbs can be removed from the ground anytime between April and June, depending on your local climate. Generally, wait until 4-6 weeks after the plants have finished flowering or when the leaves have turned yellow and begun to die back. This ensures that the bulbs have stored enough energy for the next growing season. After lifting, dry the bulbs and store them in a cool, dark, dry, and airy place, dusting them with insecticide to prevent thrips, just as you would when dividing gladioli. These bulbs can be placed inside cardboard boxes with layers of newspaper or in breathable paper bags stored in an unheated garage, or even inside a fridge (usually in the vegetable drawer). Check stored bulbs occasionally during winter, maintaining storage conditions between 2-7°C with good air circulation. Following these steps ensures gladioli thrive and produce beautiful blooms throughout the growing season. Adjusting the timing based on your local climate will help ensure the best results for your gladioli.
Pest Management
Aphids and thrips are the main problems for gladioli. If you notice thrip damage, such as streaking of leaves or flower damage, dust the plants with an insecticide. However, if you prefer natural pest control methods, try a mix of good gardening habits and natural remedies. Plant gladioli with enough space for air to flow, rotate where you plant them each year, and clean up dead leaves and debris to keep pests away. Companion plants like marigolds, garlic, and chives can help repel pests, and beneficial insects like ladybugs and lacewings, along with native birds, can eat many garden pests. Regularly check your plants and pick off any pests you see. Use sprays made from neem oil or a simple mix of dish soap and water to deter pests. Sprinkle diatomaceous earth around the plants to keep slugs and caterpillars away, and use Bacillus thuringiensis (Bt) to target caterpillars specifically. Spraying essential oils like peppermint, rosemary, or eucalyptus mixed with water can also help keep pests at bay. Always read the packaging of any product to ensure it is suitable for your environment and household, especially if you have children and pets. These natural methods will help you keep your gladioli healthy and pest-free without using chemicals in the Australian climate.
Note that extreme heat can cause symptoms similar to thrip damage on flowers.
Summary: Growing Yellow Gladioli
In conclusion, Yellow Gladioli are a delightful addition to any garden, known for their bright, sunny blooms and impressive height. These flowers thrive in full sun and well-draining soil, making them ideal for a variety of climates, particularly temperate to warm regions. With proper planting and care, Yellow Gladioli will produce a stunning display of blooms approximately 100 days after planting. Perfect for garden borders and cut flower arrangements, these gladioli add a touch of warmth and cheerfulness to any landscape. With regular watering and protection from strong winds, these radiant flowers will flourish, providing a spectacular and uplifting backdrop throughout the warmer months.
Tips: To pick flowers, run a knife down the stem and twist across at the desired length. This method ensures that the foliage remains, allowing the bulb to continue growing. For a long vase life, pick flowers as the first floret opens.
Caution: Harmful if eaten; may cause skin irritation.
Supplied as a pack of three dormant bulbs.
Important Reminder: While we strive to realistically represent our products, various factors such as climatic conditions, natural variation, or manufacturing changes may affect the precise appearance of each variety. Typically, images depict mature specimens, while the supplied stock is in its dormant state and will develop over time. The images are intended as a guide only. Please note that packs may contain bulbs of the same colour and variety.