How deep should each group be planted? Plant bulbs at the right depth. A general rule is to plant them three times their height from base to shoulder. There are some exceptions, which I’ll explain later.
Large #1 size daffodil bulbs are the biggest available. Nurseries don’t carry these. Measure planting depth from the base to the bulb’s shoulder. If the bulb is 3 inches tall, cover it with 6 inches of soil. Check the charts to see how deep each type should be planted.
For tulips, plant them 8 inches deep. Daffodils go 6+ inches, spring crocus at 2 inches, and anemones 1.5 inches. The fall-blooming Crocus Sativus should be planted 4 inches deep.
I plant tulips shallow because I treat them as annuals. Shallow planting instea makes them easy to remove after they bloom. Tulips need very cold winters to naturalize.
The Giant Scilla is different. Leave one-third of the bulb above the soil.
Peonies also need shallow planting. Keep their pink or white buds just 1/2 inch below ground level.
Always loosen and amend the soil before planting for best results. Of course, the soil should be well amended and loosened before planting if possible.
Spacing Is Crucial
When planting bulbs, spacing is also crucial. Place daffodil bulbs about 6 inches apart to allow them room to grow and spread over time. Tulips can be planted closer, about 4 inches apart, especially when treated as annuals. Crocuses and anemones should be spaced around 3 inches apart, as they are smaller and will fill in gaps quickly.
Water the bulbs well after planting to help them establish roots. In dry climates or during a dry spell, continue watering to keep the soil moist but not waterlogged. Mulching the soil can help retain moisture and protect bulbs during winter.
If you live in a colder region, don’t worry. Most bulbs are hardy and will survive frost. However, in milder climates, you may need to refrigerate bulbs like tulips for a few weeks before planting to simulate winter conditions. Proper care ensures a vibrant, colorful garden each spring.
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