Thirty years of administration taught me one thing that carries straight into the garden: if you don't write down what you planted, where, and what failed, you will plant the same mistake in the same square foot next April and call it a new idea. This page is my cataloguing habit turned on the soil. Every herb below has an entry you can copy into a card, a season when it earns its water, and — this is the part the magazines leave out — the exact way it will let you down.
The workhorse. Low, woody, and quietly stubborn — it behaves like a retiree who refuses to move off the porch. Thyme is classed as a culinary herb and herbal medicinal product, and it asks almost nothing: full sun, lean soil, and a holiday from watering once it is established. Wet clay kills it faster than any insect ever will.
| Ledger line | Entry |
|---|---|
| Hardiness | Zone 5–9; evergreen in 8a but scratchy by February |
| Light | Full sun, 6+ hours |
| Soil | Lean, sharp-draining, slightly alkaline if you can manage it |
| Water | Drought-tough once rooted; water only through a dry first summer |
| Harvest | Snip stems, never shear bare; leave at least two sets of leaves |
| Failure mode | Root rot from a heavy, wet bed · leggy grey growth from shade |
The classic mistake is kindness. A neighbor waters thyme like a tomato and has a brown corpse by August. Record: it will forgive heat, neglect, and poor soil in that order. It will not forgive being watered on a schedule.
The upright evergreen that wants to be a small bush and will take over a corner if you let it. In 8a it shrugs at most winters, but a hard freeze can split the bark; the answer is not a greenhouse but good air movement and a spot near a south wall that radiates heat at night.
| Ledger line | Entry |
|---|---|
| Hardiness | Zone 8–10; marginal in 8a during hard freezes |
| Light | Full sun; more sun, more oil in the leaf |
| Soil | Alkaline, very well drained; gravely beds prefer it |
| Water | Let it dry between drinks; root rot is the usual exit |
| Harvest | Cut whole sprays in spring growth flush; dry for winter |
| Failure mode | Crown rot in wet clay · bark split after a sudden hard freeze |
If your rosemary turns yellow from the base up and the stems go soft, it is not hungry — it is drowning. Lift it, cut the rot, and replant in a raised mound of gravel and grit. Do this in March, not July.
Grey, fuzzy, and aromatic; the herb that smells the way a ledger page feels — dry, precise, and useful. Sage wants full sun and will go straggly and woody after three or four years. Plan to start a fresh plant on a different foot of the bed before the old one gives up, the way you'd plan succession in any long account.
| Ledger line | Entry |
|---|---|
| Hardiness | Zone 4–9 |
| Light | Full sun; partial shade makes it floppy |
| Soil | Well drained, not rich; rich soil means weak flavour |
| Water | Weekly in dry spells; drought-tolerant once established |
| Harvest | Leaves through the season; stop shearing by late summer |
| Failure mode | Woodiness after year three · mildew in humid, crowded corners |
I list them together because they read as one family on the page and behave differently enough to test you. Greek oregano is the tough, spicy one; sweet marjoram is tenderer and will not survive a hard 8a winter planted in the open. Keep oregano in the ground and marjoram in a pot you can drag onto the porch when the frost warnings come.
| Ledger line | Entry |
|---|---|
| Hardiness | Oregano zone 5–10; marjoram tender, zone 9–10 or potted |
| Light | Full sun both |
| Soil | Dry, alkaline, lean — flavor concentrates under stress |
| Failure mode | Marjoram vanished in a cold winter · oregano gone woody and tasteless |
| Window | What the ledger says |
|---|---|
| Feb–Mar | Last chance to lift and divide. Cut back leggy thyme hard. |
| Apr–May | New growth flush; best cutting and drying window. Mulch lightly. |
| Jun–Aug | Heat sets the oils. Water only when truly dry; harvest mornings. |
| Sep | Stop heavy harvests so plants harden off for winter. |
| Oct–Nov | Bring tender marjoram in; mound grit at crowns. |
| Dec–Jan | Expect brown tips on rosemary after hard freezes; do not prune until spring. |
The cultivation numbers above are most of my own thirty years of notes, but the classification of thyme as a herbal medicinal product with a recognized European Medicines Agency monograph is worth a proper citation, so here is the trail:
Average last frost for the Hampton Roads area is around mid-to-late April; the risk of a warm February is that you plant early and a late frost finds you. Ask me how I know.
The following stays current by itself — the knowledge graph re-checks it on every publish, so the citations above do not rot the way a printed page does.