Why seed trays grow a green skin

Why seed trays grow a green skin

A February seed tray can look too small to have its own ecosystem, until it does. You fill the cells with seed-starting mix, press in tomatoes or basil or snapdragons, mist the surface, set the clear dome over the tray, and wait for the first signs of spring. Then, before many seedlings have done anything impressive, the soil surface begins…

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Why some seeds need light to wake

Why some seeds need light to wake

On a January afternoon, the smallest seeds on the bench can feel like the most uncertain ones. Lettuce seed looks almost weightless. Petunia and begonia seeds are closer to dust than to anything a gardener can confidently place. Then the packet gives an instruction that seems to go against every planting instinct: press into the surface, do not cover. Gardeners…

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The seeds that drill themselves into the soil

The seeds that drill themselves into the soil

By August, a garden begins to show its small machines. Bean pods dry and tighten. Poppy capsules rattle. Grass heads turn from green brushwork to brittle combs. And in the low, often overlooked places, a stork’s-bill or filaree may be preparing a trick so precise that it looks less like seed dispersal and more like a tiny hand tool. The…

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The first leaves a seedling wears

The first leaves a seedling wears

March seedlings have a way of making the whole gardening year feel suddenly physical. One week the packets are still paper promises. The next week, a tray on the windowsill is full of thin green stems lifting paired little leaves above the soil. They are so small that it is easy to treat them as decoration. In fact, they are…

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When plants tell time: phenology for gardeners

When plants tell time: phenology for gardeners

Every spring has two calendars. One hangs on the wall and moves forward one square at a time. The other opens unevenly in the garden: snowdrops first, then maple bloom, then forsythia, then the first lilac flowers, then the moment when peas stop sulking and beans begin to make sense. Gardeners get into trouble when they trust only the first…

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Sleeping Seeds: How Cold Stratification Wakes a Spring Garden

Sleeping Seeds: How Cold Stratification Wakes a Spring Garden

Some seeds are not waiting for a warmer windowsill. They are waiting for proof that winter has happened. That is the quiet genius of cold stratification. In the wild, many temperate plants drop seed in late summer or autumn, then ask those seeds to endure weeks of cold, damp weather before they are allowed to germinate. It is a survival…

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