Illustrative mixed garden bed with orange, yellow, blue and pink flowers among varied herb foliage in morning sun

How to Grow Edible Flowers and Herbs from Seed in South Africa

Grow a colourful, fragrant patch that changes week by week as flowers and herbs emerge at different speeds. This mixed packet suits gardeners who enjoy an informal bed rather than neat rows of one crop, and it rewards patient thinning, close observation and plenty of sun.

The seed is genuinely mixed, so there is no single species, mature height or harvest day. Follow the shallow packet sowing plan first, then give individual plants more room as their leaves and growth forms become recognisable. If you hope to use anything in the kitchen, read the identification and food-safety section before harvesting.

Quick Grow Facts

Packet starting point

Seed and preparation: One 5 g raw-seed mix. Gently redistribute the seed before sowing; do not soak, scarify or chill the whole blend.
When to sow: Spring to autumn on the packet. Use the regional notes below to choose a mild local window.
Position: Full sun. Protect newly emerged seedlings from exceptional heat and drying wind while they establish.
Depth and light: Cover with about 3 mm of fine soil or seed mix. The unidentified components do not share one light-or-dark requirement, so do not bury more deeply.

Emergence and outcome

Temperature: The linked supplier range is 15–25 °C. Stable, mild seed-zone conditions are more useful than forcing heat.
Germination: Look for the first seedlings in 7–14 days. Some slower herbs can take several weeks; keep a sound tray for at least four weeks.
Spacing: Thin initially to 20 cm. Widen spacing as vigorous, spreading or tall plants become recognisable.
Flower or harvest check: Start inspecting from 70–90 days on the current published packet-label image. Do not expect every component to be usable at once.

Edible Flowers And Herbs Seeds: what is in the mix?

The 5 g Ubuntuberg packet is sold by GARDENING.co.za as raw mixed seed under SKU 706102-S005GR. Its front label gives full sun, spring-to-autumn sowing, 3 mm depth, 20 cm spacing, 7–14-day germination and a 70–90-day harvest check.

The supplier channel publishes these genus-level components: Calendula, Monarda, Perilla, Tagetes, Agastache, Allium, Borago, Diplotaxis, Hyssopus, Levisticum, Matricaria, Melissa, Ocimum, Petroselinum, Thymus and Salvia. It also prints “tropaeloum”, which appears to be intended as a nasturtium-type name but is not accepted here as a confirmed botanical identity.

No species, cultivars, proportions or equal seed shares are declared. That matters because one genus can contain plants with different life cycles, heights, germination triggers and edible parts. Expect a blend of low rosettes, leafy herbs, upright or clumping plants, bushy flowers and possibly trailing growth. The online “annual” and 15 cm descriptions cannot be applied reliably to the whole mix.

Choose Edible Flowers And Herbs Seeds.

Sow the mix step by step

Prepare a weed-free bed or broad container

Choose a sunny position with loose, well-drained soil. Remove weeds before sowing so unfamiliar seedlings are not lost among them. Work in mature compost if the soil is very poor, but avoid a heavy dose of high-nitrogen fertiliser. In containers, use a wide pot or trough with drainage holes and fresh potting mix; a tiny pot will crowd the different growth forms too quickly.

Water the prepared soil before sowing. The top layer should be evenly damp and crumbly, not muddy. Keep the packet label so you can compare any lot-specific warning with this plan.

Distribute the different seed sizes

Close the packet and turn it gently several times before opening. Mixed seed can separate during transport, with heavier seed settling to the bottom.
For an even broadcast, mix the seed with a small amount of clean, dry fine sand immediately before sowing. Do not store it in damp sand.
Scatter thinly over the prepared surface. A few short labelled strips are easier to thin than one dense heap.
Cover with about 3 mm of fine soil or seed mix, matching the current published label image. Press very lightly so the seed contacts the moist layer.
Water with a fine rose or gentle mist that does not wash the seed into clumps. Add a visible label with the product name and date.

Why the shallow cover is a compromise: the unnamed species do not share one germination recipe. Some provisional members may prefer darkness, some benefit from light, and some may respond to chilling. Follow the published label image’s 3 mm covering for this commercial mix, but expect staggered emergence. Do not pretreat the entire packet for one guessed species.

Direct sow or use a tray?

Direct sowing

This is the simplest route because tap-rooted or quick-growing components are not disturbed. Protect the seedbed from birds, pets, hard rain and drying wind. Keep the top 3–5 mm consistently moist until emergence, then water a little more deeply.

Individual modules

If direct sowing is not practical, place one or two mixed seeds in each relatively deep module. Sow at 3 mm, give bright light after emergence and provide strong airflow. Avoid a communal tray and later pricking out, because an unidentified seedling may form a sensitive taproot. Move each intact plug while very young, as soon as the roots hold the mix lightly, without teasing the roots apart.

Thin, transplant and let each growth form show itself

Begin thinning once seedlings have true leaves and are competing for light. Keep the strongest, best-spaced plants and work towards the published label image’s initial 20 cm spacing. Do not assume a slow or unfamiliar seedling is a weed. If necessary, wait until it can be identified from several true leaves.

Some likely growth forms need more than 20 cm once established. Borage-type, bee-balm-type, lovage, sage or trailing nasturtium-type plants can overshadow small herbs, while thyme-type or parsley-type plants may stay lower. Move young intact plugs into separate pots or widen spacing before roots become entangled. In humid districts, 25–30 cm between retained plants improves airflow; a vigorous plant may need still more room after identification.

Harden tray-grown seedlings over 7–10 days. Start with a sheltered outdoor position, then increase sun and wind exposure gradually. Transplant in the cool part of the day at the same depth, water in, and shade briefly if the weather turns unusually hot.

This unidentified mix is not suitable for a precision intensive cut row. A temporary nursery strip can be sown more closely, but final spacing must follow each positively identified plant’s mature form. Install a low support only for trailing growth or a soft stake for a tall stem that flops; most low herbs need none. Pinch only a correctly identified branching herb after it is established, and deadhead recognised flowering annuals to encourage repeat bloom.

Choose the best South African sowing window

The published spring-to-autumn sowing range is broad. Local frost, winter rain, summer humidity and extreme heat decide whether a particular sowing will establish well. These are climate-based starting points rather than promises for an unnamed species mix.

Winter-rainfall Western Cape

Try early autumn or late winter into spring. Cool-season flowers and herbs can establish in mild weather, but the mixed bed still needs drainage through persistent winter rain. Use a raised bed or container in heavy soil, keep foliage airy and begin irrigation as the dry summer arrives. Avoid scattering the whole packet into the hottest, driest midsummer soil.

Frost-prone interior

Start under protection near the end of winter or direct sow after serious frost risk when the seedbed is warming. Make an early-autumn sowing only if young plants have time to establish before hard frost. Harden seedlings carefully. Tender annual components may be killed by frost, while unconfirmed perennial components cannot be promised to overwinter.

Humid coast and KZN Midlands

Favour autumn, winter or early spring on the warm coast; use local frost dates in cooler Midlands gardens. Choose morning sun, wider spacing and soil-level watering. High humidity can favour mildew and leaf disease in crowded growth, while some components decline in prolonged wet roots.

Hot-dry or subtropical interior

Sow in early spring or late summer into autumn, using the mildest reliable window. In frost-free subtropical gardens, winter can suit cooler components. Protect the seedbed from scorching afternoon sun until established, mulch lightly after seedlings are large enough, and keep shallow roots from drying between waterings.

Care for a mixed flower-and-herb bed

Light: aim for at least six hours of direct sun. In severe heat, temporary afternoon protection can prevent tiny seedlings scorching; established flowering plants generally need good light.
Water: keep the surface evenly moist through emergence. After establishment, water the root zone deeply, then let the surface begin drying. Constant saturation encourages damping-off and root rot.
Soil: use fertile but free-draining soil with mature compost. Raised beds or containers help where winter rain or summer storms leave the ground soggy.
Feeding: start with compost and observe growth. A modest balanced feed may help container plants, but excessive nitrogen can produce soft leaves and fewer flowers.
Airflow: thin early, move vigorous plants and water in the morning at soil level. Avoid working among wet foliage when disease is present.
Flowers and branching: deadhead recognised calendula- or tagetes-type annuals for repeat bloom. Pinch recognised basil-type or bee-balm-type shoots only after establishment. Do not prune an unknown seedling by guesswork.
Support: allow trailing growth to spill from a container or give it a low support. Stake only tall stems that lean in wind; do not force every component into one form.

Pests and diseases

Inspect young plants for slugs and snails, aphids, flea beetles on rocket-type leaves, leaf miners and chewing caterpillars. Start with barriers, hand removal, a firm water spray for aphids, clean tools and removal of badly diseased tissue. Damping-off, powdery mildew, leaf spots and root rot are more likely in dense, wet plantings.

If a harvest may be eaten, use only a South African agricultural remedy registered for the correctly identified edible crop and the target problem, exactly as its label directs. Observe the pre-harvest interval. A product registered for ornamental flowers or one herb is not automatically suitable for every plant in this mix.

Harvest only after positive identification

The current published packet-label image says to begin checking at 70–90 days, while online supplier descriptions say 80–90 days. Treat these as inspection windows, not a promise that all flowers and herbs will be ready together. Some blooms may open sooner; slow herbs or perennial forms may take much longer.

Grow ornamental-first unless the evidence catches up: the product name and genus list do not identify each species, edible part or treatment history. Do not eat sowing seed, unidentified seedlings, leaves or flowers. “Raw seed” describes the physical seed form; it does not prove untreated or food-grade status.

Before any kitchen use, confirm all four points:

The delivered packet or supplier provides the full scientific species identity for the plant.
A reliable food-safety source confirms the particular edible part; leaves, petals, whole flowers and seeds are not interchangeable.
The lot and every fertiliser or crop-protection input used are suitable for that edible crop.
The harvested plant matches the confirmed identity and is clean, healthy and free from unsafe chemical exposure.

If those conditions are met, harvest sound flowers after they open, preferably in the cool morning after dew has dried, or take light herb cuttings from established plants. Rinse gently under clean running water and introduce unfamiliar edible flowers in small amounts because pollen or plant sensitivity can cause a reaction.

Borage needs an extra limit. Food-safety authorities warn that borage can contain pyrrolizidine alkaloids, and borage-containing infusions have produced high measurements. Do not use borage leaves, make borage tea, eat it regularly or treat it as medicine. Keep any borage-type plant ornamental unless authoritative product-specific advice resolves the risk.

Why germination or establishment fails

Only one kind appears

Seed sizes may have separated in the packet, the sowing may be too dense in one spot, or fast components may simply emerge first. Keep the bed evenly moist, label it and wait at least four weeks while conditions remain sound. Redistribute mixed seed gently before the next sowing.

Nothing germinates

Check depth, seed-zone temperature and moisture. A shallow sowing can dry quickly; a deep or crusted covering can block tiny seed; waterlogging can rot it. The supplier channel’s 15–25 °C range is mild, not an instruction to overheat a tray.

Seedlings collapse at soil level

Damping-off is encouraged by saturated medium, stale air, dirty containers and overcrowding. Remove collapsed plants, improve airflow, thin promptly and water in the morning without soaking stems.

Seedlings fail after transplanting

Root disturbance, a damaged taproot, sudden full sun, frost or a dry plug can stop establishment. Move young plants with the root ball intact, harden gradually and transplant in mild weather.

Tall plants smother low herbs

The mix does not have one mature height. Move or thin vigorous plants early, redirect trailing growth and give recognised clumps more than the initial 20 cm where necessary. Do not wait until stems and roots are fully tangled.

Leaves mildew or roots rot

Crowding, wet foliage, poor airflow or waterlogged soil are likely causes. Widen spacing, water the soil rather than leaves, improve drainage and remove badly affected growth. Do not apply a home remedy to plants that may be eaten.

Plenty of leaves, few flowers

Too much nitrogen, too little sun, heat stress or an immature perennial component can delay bloom. Stop heavy feeding, improve light where practical and reassess once the plant can be identified.

You cannot identify a plant

Leave it out of the kitchen. Keep it as an ornamental, photograph flowers and mature leaves for an expert identification, and ask the supplier for the species and edible-part list. A common name or packet title is not enough.

Sources and growing notes

Label facts come from the current published GARDENING.co.za packet-label image for SKU 706102-S005GR. The component list and 15–25 °C range come from the current Gro-Pak/Kirchhoffs supplier channel; that channel does not identify species, cultivars, ratios or the treatment status of the delivered Ubuntuberg lot.

Food-safety boundaries follow Colorado State University Extension’s edible-flower guidance, Penn State Extension’s identification guidance, the UK Food Standards Agency’s plant-toxin advice, and South African agricultural-input controls. Regional timing is a climate-based adaptation, not a trial of an unnamed cultivar mix.

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