In brief: Plant flower bulbs in autumn for spring blooms. The planting depth should be two to three times the height of the bulb. Choose a well-drained site that does not become waterlogged. After flowering, cut off only the flower heads and leave the leaves in place until they turn yellow so the bulb can store nutrients.
Flower Bulbs: Care and Varieties for a Sea of Blooms
Flower bulbs bring early splashes of color to your garden. The bulbs store everything they need to get started. All they need is the right time and place. We show you how to plant flower bulbs and which varieties are right for you.
How do I plant flower bulbs correctly?
Success starts with planting. Pay attention to depth, spacing and location. The bulb is the storehouse for the first flowers.
The ideal time to plant spring bulbs
Plant spring bulbs in autumn. The soil is still warm, allowing the bulb to develop roots. September to November is the main planting period. Do not wait for the first frost.
The cold period in winter is essential. It signals to the bulb that spring is beginning. Without it, flowering may not occur. Plant bulbs bought late in December as long as the ground is not frozen.
Expert tip
Place bulbs in the planting hole with the tip pointing upward. If you are unsure which way is up, plant them on their side. The shoot will find its way upward.
Planting depth and spacing: the formula
The rule is simple. Dig to twice the height of the bulb. A 5 cm tall tulip bulb needs a 10-15 cm deep hole. Heavy soils can tolerate slightly shallower planting.
Leave a distance of around two to three bulb widths between bulbs. This prevents competition and fungal diseases. For a natural look, scatter the bulbs and plant them where they land.
The best site and soil
Almost all bulb plants need well-drained soil. Waterlogging causes rot. Improve heavy clay soils with sand. A sunny to partially shaded spot ensures vigorous blooms.
For tools and soil improvers, you will find everything in our garden tools category. It will help you keep your beds in shape.
“A bulb is a complete miniature plant. It already contains the flower shoot and the nutrients needed to get started. Our job is to give it the right conditions.”
Which spring bulbs are tough and reliable?
Some varieties establish themselves permanently. They even multiply. These types are perfect for beginners and low-maintenance gardens.
Classics: tulips, daffodils and hyacinths
Tulips offer an incredible range of colors. Once-planted varieties such as Darwin hybrid tulips bloom for several years. Daffodils are even more reliable. They multiply through offsets.
Hyacinths have an intense fragrance. They also grow well in pots on the patio. All three need additional nutrients after flowering. Our range of plant and flower fertilizer supports them.
Naturalizing favorites: snowdrops and crocuses
These small bulbs spread over time. They are ideal for lawns and beneath trees and shrubs. Plant them in groups of at least ten. Over the years, they will form dense carpets.
Snowdrops prefer moister locations in spring. Crocuses love sun. Do not mow the grass until their foliage has turned yellow. This helps strengthen the bulbs for the following year.
Important note
Never plant in pure, fresh potting soil without drainage. The soil retains too much moisture. Always mix in sand or gravel, especially in pots and planters.
How do I care for bulb plants after flowering?
Aftercare determines whether the plants will bloom the following year. The bulb needs to replenish its reserves. Do not cut it back too early.
The right way to prune: what should remain?
Remove only the spent flower head. Do not cut off the stem. Leave all the leaves until they have completely turned yellow. This process takes several weeks.
During this time, the plant carries out photosynthesis. It replenishes its storage bulb. Do not tie the foliage into braids. This restricts nutrient production.
Fertilizing and watering for the next season
Immediately after flowering is the best time to fertilize. Use a fertilizer with a high potassium content. It supports bulb formation. Continue watering during dry periods until the foliage withers.
In our fertilizer range, you will find the right products for every growth phase.
“The most common care problem is impatience. Yellowing foliage looks untidy, but it is vital. Hide it cleverly with perennials that emerge later.”
What should you know about ornamental allium care?
Ornamental alliums bring spectacular globes of flowers to the garden. Their care differs slightly from that of other bulbs. They need dry conditions during dormancy.
Planting and choosing a site for alliums
Plant ornamental alliums in autumn, just like tulips. Plant large varieties such as 'Globemaster' 15-20 cm deep. Choose a warm spot in full sun. The soil must be completely well drained.
Ornamental allium bulbs rot quickly in wet winter conditions. Dig the planting hole deeper. Add a 5 cm layer of sand for drainage. Then place the bulb in the hole.
Additional advice
Combine ornamental alliums with grasses or perennials that emerge later. They hide the fading allium foliage and can also help support the tall flower stems.
Summer care and overwintering
After flowering in June/July, ornamental alliums need dry conditions. Stop watering them. Allow the leaves to die back naturally. Many varieties are winter hardy. A layer of mulch offers protection in very cold areas.
, and are special care products for woody plants and can also be useful around bulb plantings beneath trees. They protect bark and support tree health, which benefits the bulbs in the root zone.
How can I protect bulbs from pests?
Voles and narcissus flies are the biggest threats. Prevention is the best protection. Protect your investment.
Practical protection against voles
Plant bulbs in special wire planting baskets. These are available in various sizes. They keep rodents away while allowing roots to grow through. Alternatively, choose varieties that mice avoid.
Daffodils, snowdrops and ornamental alliums are usually safe. Tulips and crocuses are on the menu. In the category Pest + Plant Protection you will find further solutions.
Preventing fungal diseases and rot
Only buy firm, mould-free bulbs. Do not plant them too close together. Avoid waterlogging with the right soil preparation. Remove diseased bulbs from the soil immediately.
Grey mould can occur during wet springs. An airy location minimises the risk. For acute problems, our Plant Protection section offers suitable products.
Bulb plants in pots and on the balcony
Even without a garden, you can enjoy spring flowers. Growing them in containers works very well. Just bear a few special considerations in mind.
The perennial container garden
Choose deep pots with drainage holes. Add a layer of expanded clay at the bottom. Use potting compost mixed with sand. Plant the bulbs in several layers, one above the other, for long-lasting blooms.
Water moderately, but never let the root ball dry out. In winter, place the pots against a sheltered house wall. Wrap them in bubble wrap to protect against severe frost.
For watering your containers, you will find everything you need in the Garden Irrigation category.
What happens after flowering in pots?
You can plant the bulbs out. Or you can leave them in the pot. After the foliage has died back, place the pot in a shady, dry location. Start watering again in autumn and apply a light feed. Many bulbs will sprout again this way.
Especially hardy varieties such as small daffodils or botanical tulips are suitable for this. However, they need a cold period. Place the pots somewhere cold for several weeks.
With the right planning and care, bulb plants transform your garden into a reliable sea of blooms. You can start the gardening year with little effort and a big impact. Lay the foundations this autumn.
Frequently asked questions
- When should you plant flower bulbs for spring?
- Plant spring-flowering bulbs such as tulips, daffodils and hyacinths between September and November, as long as the ground is frost-free. The bulbs need the winter cold to sprout. Bulbs planted late often flower later or less profusely.
- How deep should flower bulbs be planted?
- As a rule of thumb, planting depth should be two to three times the height of the bulb. A 5 cm tall tulip bulb should therefore be planted 10-15 cm deep. Planting too shallow makes it more susceptible to frost, while planting too deeply makes sprouting more difficult.
- What should I do with bulb plants after flowering?
- Remove the faded flower heads, but leave the foliage and stems in place until they have completely turned yellow. This allows the plant to draw nutrients back into the bulb. Do not tie the foliage together. Remove it only afterwards.
- Can flower bulbs be overwintered in pots?
- Yes. After flowering, place planted pots in a cool, sheltered location. Water sparingly, but do not let the compost dry out. Some species, such as tulips, need cold; if necessary, place the pots somewhere cold for several weeks.
- Which bulb plants are suitable for shady locations?
- Winter aconites, snowdrops, scilla and bluebells are suitable for dappled shade. They thrive beneath deciduous trees that only come fully into leaf after they have finished flowering. Avoid full sun for these varieties.
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