Repotting guide

When & how to repot Bon Bon Mix Pot Marigold (Calendula officinalis)

Also called Pot Marigold, Common Marigold, English Marigold, Ruddles.

More about bon bon mix pot marigold

About Bon Bon Mix Pot Marigold

Calendula officinalis · also called Pot Marigold, Common Marigold · flowering

Bon Bon Mix Calendula is a compact, dwarf pot marigold bearing fully double blooms in vivid orange, yellow, and apricot tones from late spring through autumn. A tough, cool-season annual that self-seeds freely and is edible. Listed by the ASPCA as mildly toxic to pets — ingestion may cause mild skin and gastric irritation.

Mature size: 25-30 cm tall, 20-25 cm spread

How to tell bon bon mix pot marigold needs repotting

Repotting on a calendar is less reliable than reading the plant. For bon bon mix pot marigold, watch for these signs:

Roots circling the bottom of the module or pot, or poking out of the drainage holes.
The seedling dries out within a day and growth has visibly stalled.
Roots are white and matted in a tight spiral when you tip the plant out.
It has outgrown its current container for the stage of the season — pot bon bon mix pot marigold on before it becomes hard root-bound.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot bon bon mix pot marigold

Pot on seedlings as they grow; not a perennial repot. Bon Bon Mix Pot Marigoldis grown for one season, so the question is really “how often to pot on” — keep moving it up before the roots circle. Compact, mounding annual.

What size pot to step bon bon mix pot marigold up to

Pot bon bon mix pot marigold on gradually — a seedling jumped straight into a huge pot sits in cold, wet, airless soil and stalls. Step up one or two sizes at a time as the roots fill each container, finishing in a large final pot or the ground. The aim is roots that never circle and never check.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot bon bon mix pot marigold

Pot bon bon mix pot marigold on through the active growing season, whenever roots fill the current container — there is no single date, just "before it becomes root-bound". Avoid potting on during a cold snap.

Step-by-step: repotting bon bon mix pot marigold

Pot on before it is root-bound. Check bon bon mix pot marigold regularly; move it up as soon as roots reach the edge of the cell or pot, not after they have circled.
Step up one or two sizes. Choose the next container up — not a giant one. Cold, wet, unused soil around a small root system stalls seedlings.
Knock it out gently. Support the stem, tip the pot, and ease the rootball out without breaking it. A little teasing of circled roots at the base is fine.
Pot into rich mix. Set it into fresh well-drained, moderately fertile garden soil or loam-based compost at the same depth (tomatoes are the exception — they can go deeper to root along the stem).
Water in and grow on. Water well, keep it in good light, and resume feeding once it is established and growing again.

Aftercare

Water bon bon mix pot marigold in well and keep it in bright light; a freshly potted-on seedling can wilt for a day while roots settle, so do not overcompensate by drowning it. Do not fertilise for about 1 week — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for bon bon mix pot marigold

Bon Bon Mix Pot Marigold wants well-drained, moderately fertile garden soil or loam-based compost. Thrives in average to poor soils — over-rich compost produces lots of foliage at the expense of flowers. A neutral to slightly alkaline pH of 6.5-7.5 suits it well. Good drainage is essential to avoid crown rot. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting bon bon mix pot marigold — frequently asked questions

How often should you repot bon bon mix pot marigold?

Pot on seedlings as they grow; not a perennial repot for bon bon mix pot marigold. Bon Bon Mix Pot Marigold is a seasonal crop, so you pot it on as a growing plant rather than repotting a perennial. Step seedlings up gradually into well-drained, moderately fertile garden soil or loam-based compost so the roots never circle the cell, ending in a large final container. A root-bound transplant stalls and never fully recovers.

What size pot does bon bon mix pot marigold need?

When is the best time of year to repot bon bon mix pot marigold?

Can you put bon bon mix pot marigold straight into a much bigger pot?

No. Even a fast-growing bon bon mix pot marigold should only go up one pot size at a time. A vastly oversized pot holds a reservoir of wet soil the roots cannot reach, which stays cold and soggy and rots the roots — the opposite of what you wanted.

Should you fertilise bon bon mix pot marigold after repotting?

Not immediately. Wait about 1 week after repotting bon bon mix pot marigold. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.